[[quoteright:308:http://static.tvtropes.org/pmwiki/pub/images/Sweetpool_5538.jpg]]
[[caption-width-right:308:OrdinaryHighSchoolStudent? You [[BodyHorror wish]].]]

->''"It's not romance, it's not even love. It's something much much deeper..."''
-->-- [[http://www.nitrochiral.com/pc/software/sweetpool/ "The official game website"]]


The third BoysLoveGame by [[NitroplusCHIRAL Nitro+CHIRAL]] of VisualNovel/TogainuNoChi fame, Sweet Pool begins with the return of Sakiyama Youji to his Catholic High School after a long absence due to illness. Suddenly he finds his life changing in unbelieveable ways as his fate becomes entangled with his [[TheStoic stoic]] classmate Shironuma Tetsuo, [[{{CloudcuckooLander}} eccentric]] upper-classman Okinaga Zenya and [[{{Keet}} friend]] Mita Makoto.

Sounds like your typical school boys love setting right? Except that this being a [[{{Nitroplus}} Nitro+]] production means that the story is also infused with horror of the most potent kind. Filled to the brim with PrimalFear and BodyHorror, all heighted with a [[CrowningMusicOfAwesome brilliantly creepy soundtrack]], this is definitely not a game for the faint-hearted.

The manga adaptation has been licensed in English by [=SuBLime=].

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!!This game provides examples of:

* ADateWithRosiePalms: Youji, several times. [[BodyHorror It makes bad things happen]]
* AllLowercaseLetters: The original title is written/stylized as 'sweet pool'
* AsTheGoodBookSays: The game starts with God's command for humans to multiply from the Old Testament.
* [[spoiler: BabiesEverAfter]]: Youji and Tetsuo's [[MultipleEndings true ending]]. Part BittersweetEnding, part FridgeHorror considering the premise.
* BecauseYouWereNiceToMe: Kitani's loyalty toward the Okinaga family began with Kunihito saving his life [[spoiler: when he found Kitani trying to kill himself. Kunihito picked up him up and began strangling him to force his survival instinct to kick in, then invited him into the yakuza to at least throw his life away productively.]]
* BigEater: Makoto
* BishonenLine: The Pure Breeds are meat monsters that have crossed it.
* BlondGuysAreEvil: Played straight with Zenya, possibly subverted with Tetsuo
* BlessedWithSuck: The parasites give their hosts supernaturally fast regeneration, but... well, the cost is being infested with hideous parasites, and since you can still die of blood loss, a fatal wound will still kill you.
* BodyHorror: Constantly, to the point that this is more of a horror game than a romance game.
* CuteKitten: A stray cat keeps comeing to Tetsu's house after he fed it once.
* {{Cloudcuckoolander}}: Zenya
* [[spoiler: DeathBySex/ DeathByChildbirth]]: A literal example in Youji's and Tetsuo's true end.
* EyeScream: There's a reason why Zenya's right eye is always covered by an eyepatch.
* {{Expy}}: Makoto looks an awful lot like [[VideoGame/{{Persona 4}} Yosuke Hanamura]] with longer hair.
* FaceOfAThug: Kitani.
* FateWorseThanDeath: In Zenya's ending [[spoiler: Youji gets captured and raped by Zenya. Timeskip a few weeks or months and Youji is still imprisoned in a dark room, treated as a sex pet, vomiting up almost everything he eats and wondering when he will die. Oh, and when he's finally too [[DeadlyEuphemism tired]]? Zenya plans to [[MummiesAtTheDinnerTable stuff him]] so that he'll stay by his side forever.]] [[{{Nitroplus}} Nitro+]] doesn't do half-assed bad ends.
* ForgetsToEat: Youji, though it's almost an active choice.
* GenUrobuchi: Only in a consultant role, [[VisualNovel/SayaNoUta though the influence is clear...]]
* {{Gorn}}
* [[DarkIsNotEvil Gross Is Not Evil]]: Implied with the parasites. They're disgusting, sure, but all they're really trying to do is breed like any animal is. [[spoiler: Onnushi-sama's flesh should have made Zenya an Osu if he willed it, but Zenya was a baby and incompatible with the parasites, and his father knew it; Kunihito's prayers go unanswered because he's blaming the object of his worship for something he did himself.]]
* HappilyAdopted: Deconstructed. [[spoiler: Tetsuo]] was abandoned by his birth parents and then adopted by a family who physically abused him, to the point where it's implied that social services stepped in to relocate him; his new parents are good, hardworking people who love him as their own and he serves dutifully as their son, but he admits that his past convinced him he wasn't truly human long before he discovered [[spoiler: he was right.]]
* [[spoiler: HomosexualReproduction: The parasites only choose human males for reproduction, as women's womb is an obstacle for them since intestines are their habitat. The baby is [[BodyHorror "born"]] from [[MisterSeahorse both partners]]. [[MindScrew Don't ask]].]]
* IfItsYouItsOkay: Youji feels this way towards [[spoiler: Tetsuo]]
* [[IllGirl Ill boy]]: Youji, to the point that he had to stay behind a year.
* IJustWantToBeNormal: Youji
** Later it turns out that [[spoiler: this also applies to Zenya.]]
* {{Keet}}: Makoto is usually cheerful and friendly. ''[[BewareOfTheNiceOnes Usually]]''.
* {{Love Makes You Crazy}}: [[spoiler: Or pheromones in Makoto's case.]]
* LudicrousGibs: Any animal that eats [[spoiler: the "seed meat" born from the parasites]] explodes into this.
* MindFuck: Oh ''so'' much.
* MisterSeahorse: One of the first sign that Youji isn't completely normal is when [[spoiler: he keeps giving birth to small living lumps of flesh.]]
* MoodWhiplash: Not in the game but after finishing any one of the [[TearJerker depressing]] and usually downright scary endings the website containing the Dev team's production notes is unlocked and amongst them, horrors of horrors, is [[spoiler: a chibi picture of all the characters relaxing around a kotatsu, including Onnushi-sama [[note]]basically a giant slab of living meat covered in pulsating veins[[/note]] in a Santa suit.]]. Finishing all the endings will grant you a CG of [[spoiler: the cast engaging in a pillow fight]].
* MultipleEndings: Notable for there being [[spoiler: no happy ones]]
* OnlySaneMan: Kitani in the Okinaga household.
* OverdrawnAtTheBloodBank: Youji literally oozes blood whenever [[spoiler: Tetsuo is concerned]].
* [[AliensMadeThemDoIt Parasites made them do it]]: Kinda justified since the parasites are [[spoiler: the damned souls from places like Sodom and Gomorrah]].
* ParentalAbandonment: Youji's parents were killed in a car accident when he was young.
* PlayingThePlayer: See SadisticChoice below.
* PromotionToParent: Youji's sister
* PrimalFear: Of the bloody, squicky kind
* ThePunishment: The parasites, more or less. [[spoiler: The souls of the damned are stripped of their right to be made in God's own image, that is, to have human forms, which gives them a host of exciting new abilities that are just awful.]]
* RapeAsDrama
* RedEyesTakeWarning: Pure Breeds, the parasites' equivalent to a hive queen, have red eyes. They're also exceedingly rare, being the only type of [[MemeticMutation meat monster]] that can assume a human form. [[spoiler: Onnushi-sama was apparently one of them, and the danger they signify is the fact that they can control their pheromones at will to affect even normal humans, and their flesh can seed in humans without exploding them into gobbets of meat if they will it. Tetsuo and Youji's offspring is one.]] Zenya's also got one [[spoiler: under the tumorous growth he hides, due to being force-fed Onnushi-sama's flesh]] under his eyepatch.
* SadisticChoice: [[spoiler: Since this game has no happy endings ''every single choice'' you make basically just decides how Youji will meet his end]].
* ScareChord: Occasionally.
* ScaryShinyGlasses: Kamiya gets a few of these moments.
* ShownTheirWork: At one point, the parasites are referred to as "myrmecoleon", ant-lions, referencing a mistranslated Hebrew word in the Septuagint version of the Old Testament. It's also something of an appropriately bizarre animal motif, as the mythical ant-lion is a creature that is half-lion and half-ant, doomed to starve to death because its opposing halves can't eat the same food. [[spoiler: Youji's already well on his way to starving to death when the story ''starts'' because the parasites make him unable to eat.]]
* SleepCute: Tetsuo
* SmellsSexy: Played completely straight since Youji, Tetsuo and Zenya all release pheromones.
* StalkerWithACrush: Makoto
* StalkerWithATestTube: [[spoiler: Kamiya and co.]] ships [=Tetsuo/Youji,=] for nefarious purposes.
* StarCrossedLovers: Youji and Tetsuo
* TheStoic: Tetsuo's expression never changes. Youji himself to a lesser extent
* [[TakeCareOfTheKids Take Care Of My Innards]]: [[spoiler: Zenya asks this of Kitani.]]
* UndyingLoyalty: Kitani's loyalty to the Okinaga family is utterly unshakeable, no matter what weird shit he has to cope with as Zenya's ersatz house-husband, and the story often points out that he'll endure anything for their sake. [[spoiler: And then subverted in one of Tetsuo and Youji's endings. Kitani has nothing left but the need to avenge the Okinagas' deaths by killing them, but instead, he finds their Pure Breed child and is immediately overcome with a need to care for him.]]
* {{Utsuge}}: The game is infamous for its dark-as-hell and sometimes downright depressing atmosphere, resulting in it being a major TearJerker for some players.
* VisualNovel
* WellDoneSonGuy: Zenya, although like most things in this game, it's not in the typical way, and he loathes his father regardless. [[spoiler: He's a failed Osu, having been fed the flesh of Onnushi-sama as a baby rather than being born a host. Most of what he does to Youji, and his hatred of Tetsuo, is rooted in his desire to prove himself to his father and fix, or at least justify, the state of his own body.]]
* WombLevel: The whole game is basically one since the interface has conspicuous amount of pulsating veins, along with distinctly organic sounding sfx.
* {{Yakuza}}: Zenya's dad was a former Yakuza boss and his underling Kitani was one as well.
* {{Yandere}}: Makoto becomes one out a jealousy. [[spoiler: He goes as far as threatening Youji with a knife, and in one ending rapes and cannibalizes him.]]
* YankTheDogsChain: Every time Youji and Tetsuo's relationship [[CharacterDevelopment takes a step]] [[HopeSpot forward]], expect the plot to come in and kick everyone in the stomach.
* YoungerThanTheyLook: Tetsuo is a year younger than Youji but manages to hide his age and work part-time as a bartender. In addition, due to the art style, [[ArtisticAge everyone looks like they are in the 20s]].
** [[spoiler: Tetsuo and Youji's son.]] He looks like a young teenager within a day of his birth.