History Main / HaremPowered

* In ''LightNovel/TheHiddenDungeonOnlyICanEnter'', Noir gets LifeEnergy from erotic acts with the opposite sex; however, this loses effectiveness quickly if he only plays around with the same girl over and over again, so he needs a harem to "spice things up" and keep that LP flowing, or he'd die.

* ''LightNovel/ISavedTooManyGirlsAndCausedTheApocalypse'' is a combination of this and StoryBreakerTeamup - due to being dragged into multiple stories from different genres, Rekka gets to [[WrongContextMagic use abilities and equipment in places where no one sees them coming]]. Can't pull out the SwordInTheStone? Just borrow the alien girl's teleportation device!
* ''LightNovel/InAnotherWorldWithMySmartphone'': Touya [[MasterOfAll can use any spell ever created]], meaning he can use spells specific to any mages in his BattleHarem, and even [[WrongContextMagic combine them]] to create RequiredSecondaryPowers for more complex abilities, such as SuperMode or {{Flight}}. [[spoiler:He also gains access to the island of Babylon, which is a base created by Professor Regina Babylon to aid him in his upcoming battle with the Fraze with access to an alchemy lab, a mass-production workshop, and facilities for producing HumongousMecha. Due to [[LovableSexManiac Regina's nature]], each piece also comes with a SexBot for Touya...including [[BrainUploading Regina herself.]]]]

* ''LightNovel/MagikaSwordsmanAndSummoner'': Kuzuki Hayashizaki is granted by his contracted summon Lemegeton the ability to use the magical powers of the girls in his harem. The more he and a girl love each other (Lemegeton clarifies it has to be love, ''not'' just friendship), the more powerful spells he can access.

* ''LightNovel/AsuraCryin'': A regular human is able to access two types of power.

* ''LightNovel/{{Campione}}'': Godou's most powerful ability, which is essentially an InstantWinCondition, can only be activated once he sufficiently understands a god, as well as their powers and origins. The GirlOfTheWeek is usually the only person who has that knowledge, which would take ''years'' of explanation to cover verbally. It's possible to impart knowledge all at once via magic, but a Campione's skin is AntiMagic. Thus, the only way said girl can give the hero the power he needs to save the day is to insert the magic ''inside'' his body, which typically means through kiss or you-know-what.

* ''LightNovel/{{Hundred}}'': The trope is PlayedWith, in that Hayato gains a PowerLimiter through his harem because he's a "Variant"--a HalfHumanHybrid caused by his DNA being infected with the Savage virus. Using too much of his Variant power can cause him to go berserk, unless the Savage virus is put under control. He can do this by "giving" some of the virus to someone else, via a kiss. If the person wasn't already a Variant themselves, they will become one by kissing him. In addition to this, two other women in his harem ([[IdolSinger Sakura]] and his [[LittleSisterHeroine little sister Karen]]) can also calm out-of-control Variants with their music.

* ''Manga/YoukaiShoujoMonsuga'': The various {{Youkai}} girls can project their spirit into Yatsuki [[EquippableAlly to grant him weapons or armor]] themed after their abilities. Initially he's [[MultiformBalance limited to one at a time]], but [[NextTierPowerUp after figuring out how]] to [[FusionDance fuse his soul with theirs]] he's able to [[AllYourPowersCombined equip all of their powers at once]].

[[folder:Light Novels]]

* ''LightNovel/DateALive'': Shido can absorb the powers of any [[MagicalGirlWarrior Spirits]] he romances with a kiss so they can have normal lives. Over time, he gains a measure of control over his powers and can develop rudimentary versions of the Spirits' magical weapons for his personal use. [[spoiler:This is because the First Spirit resurrected Shido as a HalfHumanHybrid when he died before the events of the story. The collective powers of the Spirits were always meant to be Shido's and the First Spirit merely turned regular humans into Spirits as a way to perfect and refine those powers until Shido eventually obtained them.]]

* ''LightNovel/InvadersOfTheRokujyouma'': This is a very downplayed trope, played in a more practical, long-term method than usual. Koutarou finds himself in situations where one of the girls in his harem teaches him some type of skill or bestows upon him an item or skill that slowly starts to turn him from an OrdinaryHighSchoolStudent into the spitting image of the legendary Blue Knight. [[spoiler:This allows Koutarou to eventually become the Blue Knight (via TimeTravel)]]. A full list: Sanae alters his body so he can see and manipulate spiritual energy, Theia gives him PoweredArmor and the high-tech sword Saguratin, Ruth trains him in sword-fighting, Yurika gives him a defensive enchantment, Kiriha gives him a gauntlet that produces fire and electric attacks, [[spoiler:Clan maintains his armor and incorporates the gauntlet into it, Alaia gives him the magic sword Signaltin, either Alaia or Harumi are needed to fully use the power of Signaltin, and Maki creates a mental link with him]]. However, Koutarou doesn't feel like he deserves the respect given to him due to his power coming from others.

* ''LightNovel/SekaiNoOwariNoEncore'': Due to his resemblance to an ancient hero, Ren ends up travelling with the hero's old BattleHarem - an angel, a demon and a dragon in human form, who each give him a minor boon so that he won't get himself killed by enemies who mistake Ren for the hero himself.
* ''LightNovel/StrikeTheBlood'': Kojou is a Pregenitor vampire with the ability to summon highly destructive familiars. However, the familiars will not respect a [[DoesThisRemindYouOfAnything "virgin"]] vampire and will only awaken if he drinks blood. In addition to that, some of his familiars require ''multiple'' different "blood donors", some require specific types of blood (or LifeEnergy) and some just become bored from receiving blood from the same partner over and over. Because of that, Kojou is required to keep a harem of women (and [[EvenTheGuysWantHim possibly men]]) to access his powers.
* ''LightNovel/UnlimitedFafnir'': Yuu is a "D", or a human born with the powers of a "Dragon", enormous {{Kaiju}} that select humans as "mates" and [[AndThenJohnWasAZombie turn them into a matching "Dragon".]] [[spoiler:Except later it's revealed that he's actually a "Counter-Dragon", and he also has the ability to "mate" with Ds. He thus "mates" with every girl in his school to protect them from being claimed by other Dragons.]]
* ''LightNovel/WorldBreakAriaOfCurseForAHolySwordsman'': In a world where people gain power from PastLifeMemories, Moroha is a rare example of someone able to gain power from ''two'' past lives. In one past life, he was a swordsman fighting for his [[LittleSisterHeroine little sister]] and in another, he was an Arch Mage leading a slave rebellion with [[DarkMistress his wife]]. All three of them have been reincarnated into this era, and only through deepening his relationships with them can he remember his past abilities. And on top of this, he also has a regular BattleHarem which provides backup.

* ''LightNovel/HybridXHeartMagiasAcademyAtaraxia'': Kizuna Hida can copy the Immoral weapons of the girls he does [[DeusSexMachina Heart Hybrid]] with.

* ''Literature/BeastTamer'': Rein Shroud is a Beast Tamer of uncommon skill. Not only can he form contracts with multiple animals, when most can only handle one at a time, he can form contracts with the "utlimate species", humanoids with power far beyond a human's. When he forms such bonds with an ultimate species, he receives an aspect of their power via PowerCopying. For example CatGirl Kanade gives him enhanced physical strength, {{Weredragon}} Tania provides increased magical power, and the Fairy twins Sora and Luna respectively provide increased magical control and immunity from status effects.