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''[[FictionalVideoGame Only Sense Online]]'', also known as ''OSO'', is an ambitious VirtualReality [[MassivelyMultiplayerOnlineRolePlayingGame MMORPG]] that offers players a high level of customization via its "Sense" system. Each player gets to choose from a vast list of talents known as Senses and are encouraged to create their own Sense build for an "only one play style".
During the official launch of ''Only Sense Online'', Shun, an OrdinaryHighSchoolStudent, is compelled by his best friend Takumi and younger sister Miu, both hardcore gamers and beta testers of ''OSO'', to join them in the game. HilarityEnsues when the game system mistakes his sex and generates a [[GenderBender female avatar]] for him, which he further complicates by accidentally giving himself a feminine-sounding handle "Yun". As a completely novice player, Yun picks up a set of unpopular Senses which his much more experienced companions label as trash. Undeterred by their harsh words, Yun decides to keep his Senses and experiment with them, embarking him on a journey where he would explore the richly-designed game world, meet new friends, face challenges and actually thrives in-game… all alongside with him [[RunningGag constantly trying (and failing)]] [[CassandraTruth to convince other players that he is not a girl!]]
During the official launch of ''Only Sense Online'', Shun, an OrdinaryHighSchoolStudent, is compelled by his best friend Takumi and younger sister Miu, both hardcore gamers and beta testers of ''OSO'', to join them in the game. HilarityEnsues when the game system mistakes his sex and generates a [[GenderBender female avatar]] for him, which he further complicates by accidentally giving himself a feminine-sounding handle "Yun". As a completely novice player, Yun picks up a set of unpopular Senses which his much more experienced companions label as trash. Undeterred by their harsh words, Yun decides to keep his Senses and experiment with them, embarking him on a journey where he would explore the richly-designed game world, meet new friends, face challenges and actually thrives in-game… all alongside with him [[RunningGag constantly trying (and failing)]] [[CassandraTruth to convince other players that he is not a girl!]]
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''[[FictionalVideoGame Only Sense Online]]'', also known as ''OSO'', is an ambitious VirtualReality [[MassivelyMultiplayerOnlineRolePlayingGame MMORPG]] that offers players a high level of customization via its "Sense" system. Each player gets to choose from a vast list of talents known as Senses and they are encouraged to create their own Sense build for an "only one play style".
During the official launch of ''Only Sense Online'', Shun, an OrdinaryHighSchoolStudent, is compelled by his best friend Takumi and younger sister Miu, both hardcore gamers and beta testers of ''OSO'', to join them in the game.HilarityEnsues HilarityEnsues, when the game system mistakes his sex and generates a [[GenderBender female avatar]] for him, which he further complicates by accidentally giving himself a feminine-sounding handle "Yun". As a completely complete novice player, Yun picks up a set of unpopular Senses which his much more experienced companions label as trash. Undeterred by their harsh words, Yun decides to keep his Senses and experiment with them, embarking him on a journey where he would explore the richly-designed game world, meet new friends, face challenges and actually thrives in-game… all alongside with him [[RunningGag constantly trying (and failing)]] [[CassandraTruth to convince other players that he is not a girl!]]
During the official launch of ''Only Sense Online'', Shun, an OrdinaryHighSchoolStudent, is compelled by his best friend Takumi and younger sister Miu, both hardcore gamers and beta testers of ''OSO'', to join them in the game.
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* BreakableWeapons: Equipments in ''OSO'' have durable ratings, which if sufficiently damaged can break. Luckily, it is usually possible to repair broken equipments at a cost.
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* BreakableWeapons: Equipments Equipment in ''OSO'' have durable ratings, which if sufficiently damaged can break. Luckily, it is usually possible to repair broken equipments equipment at a cost.
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* DesignItYourselfEquipment: Experienced crafters in ''OSO'' are able to customize the equipments they make, including naming them whatever they want.
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* DesignItYourselfEquipment: Experienced crafters in ''OSO'' are able to customize the equipments equipment they make, including naming them whatever they want.
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* FieldPowerEffect: Known as terrain effects in ''OSO''. Areas like the forest and plains don't have them. Wetlands have something like 【SPEED Decrease】. Dungeons have traps and caves have darkness. The ''Horia Cave'' gives the 【Confusion】 bad status.
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* FieldPowerEffect: Known as terrain effects in ''OSO''. Areas like such as the forest and plains don't have them. Wetlands have something like 【SPEED Decrease】. Dungeons have traps and caves have darkness. The ''Horia Cave'' gives the 【Confusion】 bad status.
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* PlayerGeneratedEconomy: Although it is possible to acquire basic equipments and consumables from NPC-run shops in ''OSO'', the best equipments and consumables are all made by the players themselves, which drives the creation of a vibrant player-based economy.
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* PlayerGeneratedEconomy: Although it is possible to acquire basic equipments equipment and consumables from NPC-run shops in ''OSO'', the best equipments equipment and consumables are all made by the players themselves, which drives the creation of a vibrant player-based economy.
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* CoolButInefficient: The most favorable opinion most people have for archery: sure, it looks neat, but it has serious problems, from poor range and accuracy to arrows being consumable items. [[AvertedTrope It turns out that]] archery, like other combat Senses, works best when paired with Senses that make up for its limitations, but nobody in the closed beta had figured out what the best support Senses ''were''. Meanwhile, consumables are essential for everyone and so the cost of arrows turns inconsequential next to, say, the MP potions mages eventually need to keep going. After the first book Yun's arrow worries disappear since it's just one (very small) part of prepping for combat.
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* BiggerOnTheInside: All guild halls featured in ''OSO'' (【Grafting Guild】 and 【Eight Million Gods】) so far are noted to be bigger on the inside,
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* BiggerOnTheInside: All guild halls featured in ''OSO'' (【Grafting (【Crafting Guild】 and 【Eight Million Gods】) so far are noted to be bigger on the inside,
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* FeatheredFiend: The Cockatrice in the Highlands area.
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* MarilynManeuver: In volume 5 when Yun was forced to help the Crafting Guild to host the [=PvP=] Tournament while cosplaying as a nun, an ill-timed draught generated by the opening ceremony's special effects lifted his skirt up, much to his absolute embarrassment.
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* MarilynManeuver: In volume 5 when Yun was forced to help the Crafting Guild to host the [=PvP=] Tournament while cosplaying as a nun, an ill-timed draught draft generated by the opening ceremony's special effects lifted his skirt up, much to his absolute embarrassment.
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* OptionalStealth: There are Senses and skills that give players stealth and materials to add it to equipment.
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* DrawAggro: There are some Sense skills that do this.
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* DudeLooksLikeALady: Yun's real life self looks feminine enough that he had been able to crossdress once in the past without a hitch. This is probably the reason why the game system mistook his sex in the first place. This applies even better for Lyly since Lyly is male in-game.
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* DudeLooksLikeALady: Yun's real life self looks feminine enough that he had been able to crossdress once in the past without a hitch. This is probably the reason why the game system mistook his sex in the first place. This applies even better for Lyly since Lyly is male in-game.in-game and can still crossdress without problem.
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* DudeLooksLikeALady: Yun's real life self looks feminine enough that he had been able to crossdress once in the past without a hitch. This is probably the reason why the game system mistook his sex in the first place.
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* DudeLooksLikeALady: Yun's real life self looks feminine enough that he had been able to crossdress once in the past without a hitch. This is probably the reason why the game system mistook his sex in the first place. This applies even better for Lyly since Lyly is male in-game.
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* BiggerOnTheInside: The guild house of the 【Eight Million Gods】 is already impressively huge from the outside, but it turns out to be even larger on the inside.
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* BiggerOnTheInside: The All guild house of the halls featured in ''OSO'' (【Grafting Guild】 and 【Eight Million Gods】 is already impressively huge from the outside, but it turns out Gods】) so far are noted to be even larger bigger on the inside.inside,
* FictionalVideoGame: The titular ''Only Sense Online''.
* MarilynManeuver: In volume 5 when Yun was forced to help the Crafting Guild to host the [=PvP=] Tournament while cosplaying as a nun, an ill-timed draught generated by the opening ceremony's special effects lifted his skirt up, much to his absolute embarrassment.
* PoseOfSupplication: Sei once fell down to her knees in dismay upon learning about how Yun scored yet another RareRandomDrop in ''OSO''.
* RocketJump: Yun devised a variant of this during the raid boss encounter of the "Forest Camping Game" event when he propelled himself further into the air by activating a hand-crafted magic gem enchanted with an explosion spell.
* ShipTease: The author enjoys placing Taku and Yun in compromising positions, and the latter's [[HeIsNotMyBoyfriend vehement denials of any special relationship between the both of them]] only entrenched the impressions of onlookers that "she" is acting like a {{Tsundere}}.
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* SingleUseShield: Yun has an item called the "Substitute Gem's Ring'', which allows him to completely negate one single attack, regardless of its power, at the cost of one gem.
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* SingleUseShield: Yun has an item called the "Substitute Gem's Ring'', which allows him to completely negate one single attack, a couple of attacks, regardless of its their power, at the cost of one gem.
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* TooAwesomeToUse: The fairy-possessed ring, a reward from a limited quest featured in volume 6, grants its bearer three wishes from the fairy possessing the ring before disintegrating. Yun, overwhelmed by all the potential wishes, was hesitant to use it at all[note]He eventually realized it was better off [[TakeAThirdOption releasing the fairy from the ring]] and receive periodic bonuses from it instead[/note].
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* TooAwesomeToUse: The fairy-possessed ring, a reward from a limited quest featured in volume 6, grants its bearer three wishes from the fairy possessing the ring before disintegrating. Yun, overwhelmed by all the potential wishes, was hesitant to use it at all[note]He all[[note]]He eventually realized it was better off [[TakeAThirdOption releasing the fairy from the ring]] and receive periodic bonuses from it instead[/note].instead[[/note]].
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* YouCalledMeXItMustBeSerious: Mikadzuchi, the guild master of 【Eight Million Gods】, always addressed Yun as "Missy"[note]''jou-chan''[/note], which he always tried to retort. However, after Yun saved her from a potentially deadly boss attack in the Demonfolk Resort's arena in volume 8, she actually thanked him by name, much to his surprise.
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* YouCalledMeXItMustBeSerious: Mikadzuchi, the guild master of 【Eight Million Gods】, always addressed Yun as "Missy"[note]''jou-chan''[/note], "Missy"[[note]]''jou-chan''[[/note]], which he always tried to retort. However, after Yun saved her from a potentially deadly boss attack in the Demonfolk Resort's arena in volume 8, she actually thanked him by name, much to his surprise.
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* BiggerOnTheInside: The guild house of the 【Eight Million Gods】 is already impressively huge from the outside, but it turns out to be even larger on the inside.
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* DrivenByEnvy: PlayedForLaughs during the [=PvP=] Tournament organized by the Crafting Guild in volume 5, when a group of participants with unlucky love lives form an ad hoc alliance and gang up on participants who they deem lead wholesome lives in and outside the game[[note]]a.k.a. riajuu[[/note]], in the style of the [[LightNovel/BakaAndTestSummonTheBeasts FFF]].
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* DrivenByEnvy: PlayedForLaughs during the [=PvP=] Tournament organized by the Crafting Guild 【Crafting Guild】 in volume 5, when a group of participants with unlucky love lives form an ad hoc alliance and gang up on participants who they deem lead wholesome lives in and outside the game[[note]]a.k.a. riajuu[[/note]], in the style of the [[LightNovel/BakaAndTestSummonTheBeasts FFF]].
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** Myu does have a spin-off story that shows her perspective of how she formed her party.
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** Myu does have eventually received a spin-off story that shows her perspective of how she formed her party.
* HotSpringsEpisode: DoubleSubverted in volume 8, when Yun accompanied the 【Eight Million Gods】 in their guild expedition to the [[LethalLavaLand Volcanic Area]] and encountered a hot spring. Initially, Yun refused to join with the female members of the expedition into the hot spring out of ethical concerns, and readers are only given Yun's imaginations of what could have transpired in his absence. However, later in the volume, Yun decided to take a quick dip into the spring when he thought he was alone but was then spotted by Mikadzuchi and Sei, who promptly joined him, much to his shock.
* LethalLavaLand: The Volcanic Area introduced in volume 8 is one, being filled with lethal steam vents, boiling oil pools and other dangerous hazards.
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* MonsterTown: There is the Demonfolk Resort in the Volcanic Area.
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* MonsterTown: There is the Demonfolk Resort The dungeon in the Volcanic Area.Area turned out to be a full-fledged town populated by demonfolk, aptly named the Demonfolk Resort.
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* PricelessPaperweight: In volume 8, Yun used a lithographic stone that was inscribed with rare and valuable potion recipes as a lid to secure a barrel of pickled vegetables he made after he deciphered those recipes. The stone ended up printing the inscriptions onto the pickles themselves!
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* TooAwesomeToUse: The fairy-possessed ring, a reward from a limited quest featured in volume 6, grants its bearer three wishes from the fairy possessing the ring before disintegrating. Yun, overwhelmed by all the potential wishes, was hesitant to use it at all[note]He eventually realized it was better off [[TakeAThirdOption releasing the fairy from the ring]] and receive periodic bonuses from it instead[/note].
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* UnwantedFalseFaith: PlayedForLaughs in volume 8, when Myu's party ''prayed'' to Yun before playing the Demonfolk Resort's lottery, since they believe him to have been blessed by the RandomNumberGod. Amusingly, it did raised their luck coincidentally(?) and other players end up trying to worship Yun as well before playing the lottery!
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* YouCalledMeXItMustBeSerious: Mikadzuchi, the guild master of 【Eight Million Gods】, always addressed Yun as "Missy"[note]''jou-chan''[/note], which he always tried to retort. However, after Yun saved her from a potentially deadly boss attack in the Demonfolk Resort's arena in volume 8, she actually thanked him by name, much to his surprise.
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* HealingPotion: The standard healing method in the game when one doesn't have recovery magic. There are different levels for them and they decrease in effectiveness depending on how much SP a player has in stock.
** One of the first things Yun crafted in ''OSO'', and he turns out to be so good at crafting them that he is known as the "Mysterious Potion Vendor" for a period of time.
** One of the first things Yun crafted in ''OSO'', and he turns out to be so good at crafting them that he is known as the "Mysterious Potion Vendor" for a period of time.
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* HealingPotion: The standard healing method in the game when one doesn't have recovery magic. There are different levels for them and they decrease in effectiveness depending on how much SP a player has in stock.
stock. There are also potions that heal that are not affected by the SP amount: Blue Potions and Yellow Potions.
** One of the first things Yun crafted in ''OSO'',and he one of them is the Blue Potion. He turns out to be so good at crafting them that he is known as the "Mysterious Blue Potion Vendor" for a period of time.time due to having them distributed earlier than anticipated in the game and it is not publicly known who was the one making them.
** One of the first things Yun crafted in ''OSO'',
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* ManaPotion: There are potions that restore MP.
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* EncounterRepellant: The Insect Repelling Incense does this for insect type mobs.
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* MonsterTown: There is the Demonfolk Resort in the Volcanic Area.
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* PreexistingEncounters: How mobs are in ''OSO''.
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* DrivenByEnvy: PlayedForLaughs during the PvP Tournament organized by the Crafting Guild in volume 5, when a group of participants with unlucky love lives form an ad hoc alliance and gang up on participants who they deem lead wholesome lives in and outside the game[[note]]a.k.a. riajuu[[/note]], in the style of the [[LightNovel/BakaAndTestSummonTheBeasts FFF]].
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* DrivenByEnvy: PlayedForLaughs during the PvP [=PvP=] Tournament organized by the Crafting Guild in volume 5, when a group of participants with unlucky love lives form an ad hoc alliance and gang up on participants who they deem lead wholesome lives in and outside the game[[note]]a.k.a. riajuu[[/note]], in the style of the [[LightNovel/BakaAndTestSummonTheBeasts FFF]].
* FountainOfYouth: Yun accidentally created some "Age-Faking Medicine" in volume 6 after his fairy companion pranked a potion he was brewing, which inevitably exploded and drenched him in the process. His avatar transformed into a little girl and he became stuck in that form for an extended period of time before its effect expired naturally.
* HoistByHisOwnPetard: The [=MPKer=] who tried to kill Yun and Myu's party in volume 1 by luring a horde of monsters against them ended up being overran by that very horde after Yun cast a speed debuff against him to slow him down.
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* PlayerVersusPlayer: Players can partake in PVP. They send invites to players they wish to fight and set rules on how the winner is decided.
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* PlayerVersusPlayer: Players can partake in PVP.[=PvP=]. They send invites to players they wish to fight and set rules on how the winner is decided.
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** Yun retorting to other ''OSO'' players (and failing) that he is not a girl.
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** Yun retorting to other ''OSO'' players (and failing) failing to convince) that he is not a girl.
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* ShoutOut: When Myu's party addressed the [=MPKer=] that was trying to kill them in volume 1 as "Train Man", Yun wondered whether he had anything to do with [[Franchise/TrainMan a certain unique romance novel]].
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** [[HealthPoints HP]]
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** [[HealthPoints [[HitPoints HP]]
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* GamingStatTropes: The stats in ''OSO'' are:
** [[HealthPoints HP]]
** [[{{Mana}} MP]]
** [[{{Strength}} ATK]] for physical attack
** [[{{Constitution}} DEF]] for physical defence
** [[{{Intelligence}} INT]] for magic attack
** [[{{Wisdom}} MIND]] for magic defence
** SPEED for influencing speed
** [[{{Dexterity}} DEX]] for weapon and production skill correction
** [[LuckStat LUK]] for increase in drop rates and critical hit chances
** [[HealthPoints HP]]
** [[{{Mana}} MP]]
** [[{{Strength}} ATK]] for physical attack
** [[{{Constitution}} DEF]] for physical defence
** [[{{Intelligence}} INT]] for magic attack
** [[{{Wisdom}} MIND]] for magic defence
** SPEED for influencing speed
** [[{{Dexterity}} DEX]] for weapon and production skill correction
** [[LuckStat LUK]] for increase in drop rates and critical hit chances
* PlayerArchetypes: Many of the characters of the series can be a [[MixedArchetypes combination of archetypes]] but leaning more to one side than another.
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*** Bodily Statuses: 【Poison】, 【Paralysis】, 【Sleep】 and 【Stun】.
*** Spiritual Statuses: 【Curse】, 【Charm】, 【Confusion】 and 【Anger】.
*** Spiritual Statuses: 【Curse】, 【Charm】, 【Confusion】 and 【Anger】.
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*** Bodily Statuses: 【Poison】, 【Paralysis】, 【Sleep】 and 【Stun】.
【Stun】. The DEF stat helps determine the resistance.
*** Spiritual Statuses: 【Curse】, 【Charm】, 【Confusion】 and 【Anger】. The MIND stat helps determine the resistance.
*** Spiritual Statuses: 【Curse】, 【Charm】, 【Confusion】 and 【Anger】. The MIND stat helps determine the resistance.
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* AllThereInTheManual: Subverted, as the game is poorly documented by the developers, with most guides and resources coming from wikis and forum guides assembled by beta players and built upon once the game goes into official release. Most players treat those guides as a de facto manual, including the infamous tiering of the Senses. [[spoiler:But then played straight for anyone with the Linguistics Sense, as the in-game library is full of thorough documentation of the game's workings and numerous crafting recipes that most players like Yun had worked out on their own. All of which was missed for months because it was gated behind a trash Sense.]]
* TheDevTeamThinksOfEverything: As the game goes on, it becomes increasingly clear that there are no truly trash Senses, with content, useful abilities, and helpful shortcuts hidden behind everything. It's mind-boggling how much the developers made that probably nobody has seen yet because it's gated behind something "useless."
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* HeroesPreferSwords: Swords are very popular weapons in ''OSO'', and are the weapons of choice for quite a few major characters, such as Myu and Taku, and it is implied that both of them are trying to invoke this trope by using swords.
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* HeroesPreferSwords: Swords are very popular weapons in ''OSO'', and are the weapons of choice for quite a few major characters, such as Myu and Taku, and it is implied that both of them are trying to invoke this trope by using swords. Even Sei uses a spell to give her a sword she can wield with her Staff Sense.
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* TalkingIsAFreeAction: Characters will periodically have some rather lengthy chats on strategy in the middle of fights, to the point that it can strain disbelief for anyone familiar with [=MMOs=] or the pace of action [=RPGs=] in general.
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* AcquiredPoisonImmunity: Some players deliberately take Bad Statuses to level their Resistance Senses.
* BeachEpisode: There is a side-story of Yun, Toutobi, Magi, Lucato and Myu at a beach in ''OSO''.
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* PlayerKilling: Some players take part in this. It is a bit different than PlayerVersusPlayer. The PK'er takes all the money of the player they killed and the PK'er is subjected to a penalty of losing levels if they are killed afterwards.
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* PlayerKilling: Some players take part in this. It is a bit different than PlayerVersusPlayer. The PK'er takes all half the money of the player they killed and the PK'er is subjected to a penalty of losing levels if they are killed afterwards.
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* FieldPowerEffect: Known as terrain effects in ''OSO''. Areas like the forest and plains don't have them. Wetlands have something like 【SPEED Decrease】. Dungeons have traps and caves have darkness. The ''Horia Cave'' gives the 【Confusion】 bad status.
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* PlayerVersusEnvironment: Most of the combat in '''OSO'''.
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* PlayerVersusEnvironment: Most of the combat in '''OSO'''.''OSO''.
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* StandardStatusEffects: There are eight standard status effects in ''OSO'' and a few other kinds as well.
** The eight standard status effects:
*** Bodily Statuses: 【Poison】, 【Paralysis】, 【Sleep】 and 【Stun】.
*** Spiritual Statuses: 【Curse】, 【Charm】, 【Confusion】 and 【Anger】.
** Other statuses: 【Drunkeness】
** The eight standard status effects:
*** Bodily Statuses: 【Poison】, 【Paralysis】, 【Sleep】 and 【Stun】.
*** Spiritual Statuses: 【Curse】, 【Charm】, 【Confusion】 and 【Anger】.
** Other statuses: 【Drunkeness】
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''[[FictionalVideoGame Only Sense Online]]'', also known as ''OSO'', is an ambitious VirtualReality [[MassivelyMultiplayerOnlineRolePlayingGame MMORPG]] that offers players a high level of customisability via its "Sense" system. Each player gets to choose from a vast list of talents known as Senses and are encouraged to create their own Sense build for an "only one play style".
to:
''[[FictionalVideoGame Only Sense Online]]'', also known as ''OSO'', is an ambitious VirtualReality [[MassivelyMultiplayerOnlineRolePlayingGame MMORPG]] that offers players a high level of customisability customization via its "Sense" system. Each player gets to choose from a vast list of talents known as Senses and are encouraged to create their own Sense build for an "only one play style".
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* HealingPotion: One of the first things Yun crafted in ''OSO'', and he turns out to be so good at crafting them that he is known as the "Mysterious Potion Vendor" for a period of time.
to:
* HealingPotion: The standard healing method in the game when one doesn't have recovery magic. There are different levels for them and they decrease in effectiveness depending on how much SP a player has in stock.
** One of the first things Yun crafted in ''OSO'', and he turns out to be so good at crafting them that he is known as the "Mysterious Potion Vendor" for a period of time.
** One of the first things Yun crafted in ''OSO'', and he turns out to be so good at crafting them that he is known as the "Mysterious Potion Vendor" for a period of time.
** Myu does have a spin-off story that shows her perspective of how she formed her party.
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* PlayerVersusPlayer: Players can partake in PVP.
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* PlayerVersusPlayer: Players can partake in PVP. They send invites to players they wish to fight and set rules on how the winner is decided.
* PointBuildSystem: Sense points (SP), are what players use. Players start with 10 SP to choose their initial 10 Senses. For every 10[[superscript:th]] levels a Sense reaches, a player gains 1 SP. Players can spend SP to acquire new Senses or grow Senses to higher versions. Stockpiling certain amounts of SP unlocks new Senses to spend SP on.
* PointBuildSystem: Sense points (SP), are what players use. Players start with 10 SP to choose their initial 10 Senses. For every 10[[superscript:th]] levels a Sense reaches, a player gains 1 SP. Players can spend SP to acquire new Senses or grow Senses to higher versions. Stockpiling certain amounts of SP unlocks new Senses to spend SP on.
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* TurtleIsland: The Grand Rock is a tortoise mountain found in the highlands. It has mining points and cockatrice living on it's shell.
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* ColossusClimb: The Grand Rock found in the highlands can be climbed.
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* DesignItYourselfEquipment: Experienced crafters in ''OSO'' are able to customise the equipments they make, including naming them whatever they want.
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* DesignItYourselfEquipment: Experienced crafters in ''OSO'' are able to customise customize the equipments they make, including naming them whatever they want.
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* AnInteriorDesignerIsYou: All players who own shops or houses in ''OSO'' can customise them according to their own desires.
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* AnInteriorDesignerIsYou: All players who own shops or houses in ''OSO'' can customise customize them according to their own desires.
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* JobSystem: The Sense system in ''OSO'' combines aspects of this with a PointBuildSystem, wherein the number of Senses a player can use at any point of time is capped at 10, however as they increase their masteries in their Senses, they can acquire new Senses which they can then freely swap with their existing Senses.
to:
* JobSystem: The Sense system in ''OSO'' combines aspects of this with a PointBuildSystem, wherein the number of Senses a player can use at any point of time is capped at 10, however as they increase their masteries in mastery of their Senses, they can acquire new Senses which they can then freely swap with their existing Senses.
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* PlayerKilling: Some players take part in this. It is a bit different than PlayerVersusPlayer. The PK'er takes all the money of the player they killed and the PK'er is subjected to a penalty of losing levels if they are killed afterwards.
* PlayerVersusEnvironment: Most of the combat in '''OSO'''.
* PlayerVersusPlayer: Players can partake in PVP.
* PlayerVersusEnvironment: Most of the combat in '''OSO'''.
* PlayerVersusPlayer: Players can partake in PVP.
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* SilverHasMysticPowers: Like in many games, silver weapons are effective against undead.
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* WombLevel: The Grand Rock has a dungeon inside it.
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* ComplacentGamingSyndrome: InUniverse, this created the harsh tiering of Senses that left many considered "trash." The majority of players treated ''OSO'' as any other MMO, devoting themselves to the combat grind while ignoring numerous (poorly-documented) subsystems that didn't have an immediate benefit. Even crafters mostly settled for making equipment and letting NPC vendors handle consumables. Then the [=GMs=] shook things up with a number of formal and informal events designed to force the player base out of its complacency - letting NPC vendors sell out, instituting a hunger/satiety system that suddenly made the "useless" Cooking Sense essential, the Forest Camping Game which demanded low-tier Senses to prosper, and so on.
* ElementalCrafting: Present though downplayed. For example, most people who use metal gear use iron or steel, though there are the more powerful Fine Iron and Mithril. Most better materials are RandomDrops from powerful enemies and bosses until people can acquire high-level mining skills. Yun discovers that Alchemy can bypass the boss drops by combining a lot of a low quality material into a little of something better (and is strongly implied to be the reason Myu was able to get her fancy armor far earlier than expected).
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* ItemCrafting: ''OSO'' has a very elaborate item crafting system, which necessitates the existence of players with crafting-oriented Sense builds.
to:
* ItemCrafting: ''OSO'' has a very elaborate item crafting system, which necessitates the existence of players with crafting-oriented Sense builds. Fortunately to save one's sanity, for most consumables you only ''have'' to craft them directly once, then can spend {{Mana}} to mass-produce (slightly lower-quality) copies in a short time. There'd be no keeping up with the demand for potions otherwise.
* MoneySink: The game is full of them, ranging from the constant need for [[BreakableWeapons equipment repairs]], [[AnEntrepreneurIsYou rental costs for shops and homes]], membership fees for various services such as libraries, and hefty expenses for founding and running a player guild. Yun is incredibly susceptible to these, as he's constantly blowing piles of cash on land, shop improvements, armor repairs, and new tools.
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* YouGottaHaveBlueHair: Many ''OSO'' players opt to give their [[DigitalAvatar player avatars]] fantastic hair colors, such as Myu's white hair, and Sei's light blue hair.
to:
* YouGottaHaveBlueHair: Many ''OSO'' players opt to give their [[DigitalAvatar player avatars]] fantastic hair colors, such as Myu's white hair, and Sei's light blue hair. It makes Yun and Lucato stand out more for having realistic black hair.
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* HeroOfAnotherStory: Yun's sisters and his best friend are all veteran players of ''OSO'' and their exploits in-game are all interesting stories in their own right, although they will never be shown directly in this series.
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* MagikarpPower: All of the skills Yun picks turns out to be quite useful; it just needs a lot of time and effort to level it up which he does.
to:
* MagikarpPower: All of the skills Yun picks turns out to be quite useful; it just needs a lot of time and effort to level it up which he does. For example, Yun's Hawk Eyes Sense is [[WhatKindOfLamePowerIsHeartAnyway widely derided]] in ''OSO'' because its immediate effects - extended vision and night vision - are easily substituted with other more useful Senses[[note]]Bearers of the Light Element Talent Sense for example can just simply illuminate a dark area[[/note]]. However, Yun quickly discovered (with some insight from Taku) that Hawk Eyes is in fact a targeting Sense, and allows its user to cast spells as far as the range of the extended vision it provides. And after it reaches level 50, it can be upgraded into Sky Eyes, which enhances its effects even more, and also provides new effects, including the ability to ''perceive enemy attacks in BulletTime''.
* MarshmallowHell: Magi deals it to Yun and Lyly on two separate occasions, although it was an accident for the latter.
* MarshmallowHell: Magi deals it to Yun and Lyly on two separate occasions, although it was an accident for the latter.
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* RunningGag:
** Yun retorting to other ''OSO'' players (and failing) that he is not a girl.
** Letia and her [[BigEater constant demand for food]].
** Yun retorting to other ''OSO'' players (and failing) that he is not a girl.
** Letia and her [[BigEater constant demand for food]].
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* SliceOfLife: This series is a slice of Yun's everyday life in and out of ''OSO''.
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* MagikarpPower: All of the skills Yun picks turns out to be quite useful; it just needs a lot of time and effort to level it up which he does.
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* LighterAndSofter: Compared to the likes of ''LightNovel/SwordArtOnline'' or ''VideoGame/DotHack'' or any series that has [[TheGameComeToLife the games becoming reality for the characters]], this series is very lighthearted and just follows the normal everyday gaming life of a guy.
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* AffectionateNickname: After the "Forest Camping Game" event in volume 2, Yun acquired the nickname "Young Beasts' Nanny", or simply "Nanny", thanks to his conspicuous efforts to save and take care of the young beast [[NonPlayerCharacter NPCs]] during that event. Needless to say, he [[EmbarrassingNickname dislikes that nickname intensely]].
to:
* AffectionateNickname: After the "Forest Camping Game" event in volume 2, Yun acquired acquires the nickname "Young Beasts' Nanny", or simply "Nanny", thanks to his conspicuous efforts to save and take care of the young beast [[NonPlayerCharacter NPCs]] during that event. Needless to say, he [[EmbarrassingNickname dislikes that nickname intensely]].
* DrivenByEnvy: PlayedForLaughs during the PvP Tournament organized by the Crafting Guild in volume 5, when a group of participants with unlucky love lives form an ad hoc alliance and gang up on participants who they deem lead wholesome lives in and outside the game[[note]]a.k.a. riajuu[[/note]], in the style of the [[LightNovel/BakaAndTestSummonTheBeasts FFF]].
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* HealingPotion: One of the first things Yun crafted in ''OSO'', and he turns out to be so good at crafting them that he was known as the "Mysterious Potion Vendor" for a period of time.
to:
* HealingPotion: One of the first things Yun crafted in ''OSO'', and he turns out to be so good at crafting them that he was is known as the "Mysterious Potion Vendor" for a period of time.
* ImpossibleItemDrop: During the "Forest Camping Game" event, Yun defeats a Western Bluefin Tuna monster, which drops... a set of western cooking tools.
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* ImpossibleItemDrop: During the "Forest Camping Game" event, Yun defeats a Western Bluefin Tuna monster, which drops... a set of western cooking tools.
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* UnderwaterRuins: Yun explores a cluster of such ruins during the ''Forest Camping Game'' event in ''OSO'', which turns out to provide important details on how to complete the event.
to:
* UnderwaterRuins: Yun explores a cluster of such ruins during the ''Forest "Forest Camping Game'' Game" event in ''OSO'', which turns out to provide important details on how to complete the event.
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Changed line(s) 12 (click to see context) from:
* AffectionateNickname: After the "Forest Camping Game" event in volume 2, Yun acquired the nickname "Young Beasts' Nanny", or simply "Nanny", thanks to his conspicuous efforts to save and take care of the young beast NPCs during that event. Needless to say, he [[EmbarrassingNickname dislikes that nickname intensely]].
to:
* AffectionateNickname: After the "Forest Camping Game" event in volume 2, Yun acquired the nickname "Young Beasts' Nanny", or simply "Nanny", thanks to his conspicuous efforts to save and take care of the young beast NPCs [[NonPlayerCharacter NPCs]] during that event. Needless to say, he [[EmbarrassingNickname dislikes that nickname intensely]].
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None
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[[quoteright:350:http://static.tvtropes.org/pmwiki/pub/images/oso_v01_cover.jpg]]
[[caption-width-right:350:''"Only one"'']]
''[[FictionalVideoGame Only Sense Online]]'', also known as ''OSO'', is an ambitious VirtualReality [[MassivelyMultiplayerOnlineRolePlayingGame MMORPG]] that offers players a high level of customisability via its "Sense" system. Each player gets to choose from a vast list of talents known as Senses and are encouraged to create their own Sense build for an "only one play style".
During the official launch of ''Only Sense Online'', Shun, an OrdinaryHighSchoolStudent, is compelled by his best friend Takumi and younger sister Miu, both hardcore gamers and beta testers of ''OSO'', to join them in the game. HilarityEnsues when the game system mistakes his sex and generates a [[GenderBender female avatar]] for him, which he further complicates by accidentally giving himself a feminine-sounding handle "Yun". As a completely novice player, Yun picks up a set of unpopular Senses which his much more experienced companions label as trash. Undeterred by their harsh words, Yun decides to keep his Senses and experiment with them, embarking him on a journey where he would explore the richly-designed game world, meet new friends, face challenges and actually thrives in-game… all alongside with him [[RunningGag constantly trying (and failing)]] [[CassandraTruth to convince other players that he is not a girl!]]
''Only Sense Online'' is an ongoing LightNovel series written by Aloha Zachou, and is published by Fujimi Shobo. Its SliceOfLife approach to the VRMMORPG concept makes it LighterAndSofter compared to other works of its genre, such as ''Anime/DotHackSign'' and ''LightNovel/SwordArtOnline'', although it is still exciting in its own right. ''Only Sense Online'' has a manga adaptation, which is also published by Fujimi Shobo.
----
!!This series provides examples of:
* AffectionateNickname: After the "Forest Camping Game" event in volume 2, Yun acquired the nickname "Young Beasts' Nanny", or simply "Nanny", thanks to his conspicuous efforts to save and take care of the young beast NPCs during that event. Needless to say, he [[EmbarrassingNickname dislikes that nickname intensely]].
* AmazonBrigade: Myu's usual in-game party is composed of six (including her) GamerChicks of similar ages. All of its members have different specializations, which complement each other very well, and their excellent teamwork makes them a fearsome force in-game.
* ArtificialIntelligence: One of the selling points of ''OSO'' the game is its highly advanced artificial intelligence, to the point that Yun sometimes muses whether the [[NonPlayerCharacter NPCs]] he is interacting with are in fact controlled by actual humans.
* AttractiveBentGender: Thanks to the automatic body correction applied to him after the system misidentified him as female, Yun appears in-game as a long-haired beauty.
* BottomlessQuiver: [[AvertedTrope Averted]]. One of the reasons why the bow is disdained in ''OSO'' is because arrows are one-use consumables and acquiring them from shops is very inefficient.
* BreakableWeapons: Equipments in ''OSO'' have durable ratings, which if sufficiently damaged can break. Luckily, it is usually possible to repair broken equipments at a cost.
* CallingYourAttacks: All characters in this series have the habit of calling out whatever skills they are preparing to use, presumably because the skills are all voice-activated.
* CassandraTruth: Despite his constant vehement protests otherwise, nobody besides his real life acquaintances actually believes that Yun is not a girl.
* CripplingOverspecialization: Most ''OSO'' players have combat-oriented Sense builds, which are generally sensible in a game where combat is an important aspect. However, this becomes a problem during the "Forest Camping Game" event when survivalist-based Senses become equally important and suddenly players are caught in a situation where EverythingIsTryingToKillYou[[note]]innocuous looking berries turning out to be deadly poison, for example[[/note]] and they have no adequate countermeasures besides combat skills, which [[AmazonBrigade Myu's party]] learnt the [[PoisonMushroom hard way]].
* CrossPlayer: [[invoked]] Although this option is not available by default in ''OSO'', Yun becomes one thanks to a system misidentification by the game. His real life acquaintances treat this as a case of GoodBadBug, much to his chagrin.
* CutenessProximity: All of the young beasts that appear during the "Forest Camping Game" event invoke this to whoever who gets close to them.
* DesignItYourselfEquipment: Experienced crafters in ''OSO'' are able to customise the equipments they make, including naming them whatever they want.
* DigitalAvatar: All players of ''OSO'' control one within the game's {{Cyberspace}}.
* DudeLooksLikeALady: Yun's real life self looks feminine enough that he had been able to crossdress once in the past without a hitch. This is probably the reason why the game system mistook his sex in the first place.
* AnEntrepreneurIsYou: ''OSO'' has a well-developed PlayerGeneratedEconomy, which gives players the choice to focus almost exclusively on running a business in-game.
* FirstTown: The starting town in ''OSO'' is literally named as such.
* GamerChick: Virtually all female characters in this series are one, considering they are all dedicated players of ''OSO''.
* HealingPotion: One of the first things Yun crafted in ''OSO'', and he turns out to be so good at crafting them that he was known as the "Mysterious Potion Vendor" for a period of time.
* HeroesPreferSwords: Swords are very popular weapons in ''OSO'', and are the weapons of choice for quite a few major characters, such as Myu and Taku, and it is implied that both of them are trying to invoke this trope by using swords.
* AHomeownerIsYou: It is possible for players to build their own house in ''OSO'' by purchasing land in-game and spending huge amounts of in-game currency to build on it.
* HubCity: The aforementioned FirstTown serves as this for most ''OSO'' players, as it is also the location where most crafters set up their shops in.
* AnInteriorDesignerIsYou: All players who own shops or houses in ''OSO'' can customise them according to their own desires.
* ImpossibleItemDrop: During the "Forest Camping Game" event, Yun defeats a Western Bluefin Tuna monster, which drops... a set of western cooking tools.
* ItemCrafting: ''OSO'' has a very elaborate item crafting system, which necessitates the existence of players with crafting-oriented Sense builds.
* JobSystem: The Sense system in ''OSO'' combines aspects of this with a PointBuildSystem, wherein the number of Senses a player can use at any point of time is capped at 10, however as they increase their masteries in their Senses, they can acquire new Senses which they can then freely swap with their existing Senses.
* MedievalEuropeanFantasy: The world of ''OSO'' is described to be a variant of this.
* MundaneUtility: As he becomes more used to the game, Yun finds out that he can make use of ''OSO'''s VirtualReality and practice his real life baking skills without spending actual money on baking ingredients.
* PlayerGeneratedEconomy: Although it is possible to acquire basic equipments and consumables from NPC-run shops in ''OSO'', the best equipments and consumables are all made by the players themselves, which drives the creation of a vibrant player-based economy.
* PlayerHeadquarters: All player-owned houses in ''OSO'' can take up this role, especially after they are fully decorated.
* PotionBrewingMechanic: Thanks to ''OSO'''s elaborate ItemCrafting system, potion-making is a very intricate process, and it is actually possible to greatly enhance the efficacy of a potion by performing a whole series of intermediate steps, such as drying the potion ingredients before mixing them.
* ScrappyWeapon: [[invoked]] The bow is widely derided in ''OSO'' because of its horrible cost-to-performance ratio. It requires a constant supply of arrows, which are one-use consumables, and its accuracy is terrible compared to other weapons because it requires a high dexterity stat to be effective, which most players do not usually obtain due to their heavily combat-oriented Sense builds raising their attack stat instead.
* SingleUseShield: Yun has an item called the "Substitute Gem's Ring'', which allows him to completely negate one single attack, regardless of its power, at the cost of one gem.
* TwentyMinutesIntoTheFuture: Besides the existence of a mature VirtualReality technology which enabled the creation of ''OSO'', there are no other notable differences between ''Only Sense Online'''s world and the actual world.
* UnderwaterRuins: Yun explores a cluster of such ruins during the ''Forest Camping Game'' event in ''OSO'', which turns out to provide important details on how to complete the event.
* UnknownItemIdentification: Most item drops and collectibles in ''OSO'' have to be appraised by players with the appropriate Senses before their full effects, or even identities, are uncovered.
* YearInsideHourOutside: The "Forest Camping Game" event takes place in a special ''OSO'' server in which the flow of time has been stretched by about 80 times. This enables the event to last for a week while only taking up 2 hours of real time.
* YouGottaHaveBlueHair: Many ''OSO'' players opt to give their [[DigitalAvatar player avatars]] fantastic hair colors, such as Myu's white hair, and Sei's light blue hair.
[[caption-width-right:350:''"Only one"'']]
''[[FictionalVideoGame Only Sense Online]]'', also known as ''OSO'', is an ambitious VirtualReality [[MassivelyMultiplayerOnlineRolePlayingGame MMORPG]] that offers players a high level of customisability via its "Sense" system. Each player gets to choose from a vast list of talents known as Senses and are encouraged to create their own Sense build for an "only one play style".
During the official launch of ''Only Sense Online'', Shun, an OrdinaryHighSchoolStudent, is compelled by his best friend Takumi and younger sister Miu, both hardcore gamers and beta testers of ''OSO'', to join them in the game. HilarityEnsues when the game system mistakes his sex and generates a [[GenderBender female avatar]] for him, which he further complicates by accidentally giving himself a feminine-sounding handle "Yun". As a completely novice player, Yun picks up a set of unpopular Senses which his much more experienced companions label as trash. Undeterred by their harsh words, Yun decides to keep his Senses and experiment with them, embarking him on a journey where he would explore the richly-designed game world, meet new friends, face challenges and actually thrives in-game… all alongside with him [[RunningGag constantly trying (and failing)]] [[CassandraTruth to convince other players that he is not a girl!]]
''Only Sense Online'' is an ongoing LightNovel series written by Aloha Zachou, and is published by Fujimi Shobo. Its SliceOfLife approach to the VRMMORPG concept makes it LighterAndSofter compared to other works of its genre, such as ''Anime/DotHackSign'' and ''LightNovel/SwordArtOnline'', although it is still exciting in its own right. ''Only Sense Online'' has a manga adaptation, which is also published by Fujimi Shobo.
----
!!This series provides examples of:
* AffectionateNickname: After the "Forest Camping Game" event in volume 2, Yun acquired the nickname "Young Beasts' Nanny", or simply "Nanny", thanks to his conspicuous efforts to save and take care of the young beast NPCs during that event. Needless to say, he [[EmbarrassingNickname dislikes that nickname intensely]].
* AmazonBrigade: Myu's usual in-game party is composed of six (including her) GamerChicks of similar ages. All of its members have different specializations, which complement each other very well, and their excellent teamwork makes them a fearsome force in-game.
* ArtificialIntelligence: One of the selling points of ''OSO'' the game is its highly advanced artificial intelligence, to the point that Yun sometimes muses whether the [[NonPlayerCharacter NPCs]] he is interacting with are in fact controlled by actual humans.
* AttractiveBentGender: Thanks to the automatic body correction applied to him after the system misidentified him as female, Yun appears in-game as a long-haired beauty.
* BottomlessQuiver: [[AvertedTrope Averted]]. One of the reasons why the bow is disdained in ''OSO'' is because arrows are one-use consumables and acquiring them from shops is very inefficient.
* BreakableWeapons: Equipments in ''OSO'' have durable ratings, which if sufficiently damaged can break. Luckily, it is usually possible to repair broken equipments at a cost.
* CallingYourAttacks: All characters in this series have the habit of calling out whatever skills they are preparing to use, presumably because the skills are all voice-activated.
* CassandraTruth: Despite his constant vehement protests otherwise, nobody besides his real life acquaintances actually believes that Yun is not a girl.
* CripplingOverspecialization: Most ''OSO'' players have combat-oriented Sense builds, which are generally sensible in a game where combat is an important aspect. However, this becomes a problem during the "Forest Camping Game" event when survivalist-based Senses become equally important and suddenly players are caught in a situation where EverythingIsTryingToKillYou[[note]]innocuous looking berries turning out to be deadly poison, for example[[/note]] and they have no adequate countermeasures besides combat skills, which [[AmazonBrigade Myu's party]] learnt the [[PoisonMushroom hard way]].
* CrossPlayer: [[invoked]] Although this option is not available by default in ''OSO'', Yun becomes one thanks to a system misidentification by the game. His real life acquaintances treat this as a case of GoodBadBug, much to his chagrin.
* CutenessProximity: All of the young beasts that appear during the "Forest Camping Game" event invoke this to whoever who gets close to them.
* DesignItYourselfEquipment: Experienced crafters in ''OSO'' are able to customise the equipments they make, including naming them whatever they want.
* DigitalAvatar: All players of ''OSO'' control one within the game's {{Cyberspace}}.
* DudeLooksLikeALady: Yun's real life self looks feminine enough that he had been able to crossdress once in the past without a hitch. This is probably the reason why the game system mistook his sex in the first place.
* AnEntrepreneurIsYou: ''OSO'' has a well-developed PlayerGeneratedEconomy, which gives players the choice to focus almost exclusively on running a business in-game.
* FirstTown: The starting town in ''OSO'' is literally named as such.
* GamerChick: Virtually all female characters in this series are one, considering they are all dedicated players of ''OSO''.
* HealingPotion: One of the first things Yun crafted in ''OSO'', and he turns out to be so good at crafting them that he was known as the "Mysterious Potion Vendor" for a period of time.
* HeroesPreferSwords: Swords are very popular weapons in ''OSO'', and are the weapons of choice for quite a few major characters, such as Myu and Taku, and it is implied that both of them are trying to invoke this trope by using swords.
* AHomeownerIsYou: It is possible for players to build their own house in ''OSO'' by purchasing land in-game and spending huge amounts of in-game currency to build on it.
* HubCity: The aforementioned FirstTown serves as this for most ''OSO'' players, as it is also the location where most crafters set up their shops in.
* AnInteriorDesignerIsYou: All players who own shops or houses in ''OSO'' can customise them according to their own desires.
* ImpossibleItemDrop: During the "Forest Camping Game" event, Yun defeats a Western Bluefin Tuna monster, which drops... a set of western cooking tools.
* ItemCrafting: ''OSO'' has a very elaborate item crafting system, which necessitates the existence of players with crafting-oriented Sense builds.
* JobSystem: The Sense system in ''OSO'' combines aspects of this with a PointBuildSystem, wherein the number of Senses a player can use at any point of time is capped at 10, however as they increase their masteries in their Senses, they can acquire new Senses which they can then freely swap with their existing Senses.
* MedievalEuropeanFantasy: The world of ''OSO'' is described to be a variant of this.
* MundaneUtility: As he becomes more used to the game, Yun finds out that he can make use of ''OSO'''s VirtualReality and practice his real life baking skills without spending actual money on baking ingredients.
* PlayerGeneratedEconomy: Although it is possible to acquire basic equipments and consumables from NPC-run shops in ''OSO'', the best equipments and consumables are all made by the players themselves, which drives the creation of a vibrant player-based economy.
* PlayerHeadquarters: All player-owned houses in ''OSO'' can take up this role, especially after they are fully decorated.
* PotionBrewingMechanic: Thanks to ''OSO'''s elaborate ItemCrafting system, potion-making is a very intricate process, and it is actually possible to greatly enhance the efficacy of a potion by performing a whole series of intermediate steps, such as drying the potion ingredients before mixing them.
* ScrappyWeapon: [[invoked]] The bow is widely derided in ''OSO'' because of its horrible cost-to-performance ratio. It requires a constant supply of arrows, which are one-use consumables, and its accuracy is terrible compared to other weapons because it requires a high dexterity stat to be effective, which most players do not usually obtain due to their heavily combat-oriented Sense builds raising their attack stat instead.
* SingleUseShield: Yun has an item called the "Substitute Gem's Ring'', which allows him to completely negate one single attack, regardless of its power, at the cost of one gem.
* TwentyMinutesIntoTheFuture: Besides the existence of a mature VirtualReality technology which enabled the creation of ''OSO'', there are no other notable differences between ''Only Sense Online'''s world and the actual world.
* UnderwaterRuins: Yun explores a cluster of such ruins during the ''Forest Camping Game'' event in ''OSO'', which turns out to provide important details on how to complete the event.
* UnknownItemIdentification: Most item drops and collectibles in ''OSO'' have to be appraised by players with the appropriate Senses before their full effects, or even identities, are uncovered.
* YearInsideHourOutside: The "Forest Camping Game" event takes place in a special ''OSO'' server in which the flow of time has been stretched by about 80 times. This enables the event to last for a week while only taking up 2 hours of real time.
* YouGottaHaveBlueHair: Many ''OSO'' players opt to give their [[DigitalAvatar player avatars]] fantastic hair colors, such as Myu's white hair, and Sei's light blue hair.
