Kakeru Hase is just an OrdinaryHighSchoolStudent left alone at home after his mother and sisters go on a vacation to Hawaii (and with his father away on business). No sooner had their cab left than Kakeru proceeds to do what boys his age do -- watch TV all he wants, play games for the entire summer break, and uncover his PornStash (as well as his father's). For him, life is too peaceful...

...That is, until he discovers a beautiful naked girl in his bedroom. The girl -- Ayano Fujimura, as she calls herself -- is a psychic escaping the Greenhouse, an enigmatic organization who captures such savants like her and experiment on them. Earlier, she and her fellow psychics are forced to jump off a cliff to elude the Farmers, the personal troops of the Greenhouse, but not before their leader, Joi Touma, asking her to find Kakeru himself.

Kakeru is ultimately dragged into the fight together with Ayano and Joi, as well as their other allies -- Xiao Long Bai and Kaito Himura -- despite lacking powers... or so he thought he doesn't.

''Psycho Busters'' is a seven-volume manga adaptation of a three-volume light novel series by Tadashi Agi (under the pen name "Yuya Aoki", the same one he used for ''Manga/GetBackers''), with art by Akinari Nao.

!!The manga provides the following tropes:

* AllMenArePerverts: Not that they ''mean'' to... Besides Ayano can [[InnocentFanserviceGirl be just that innocent]].
* AstralProjection: Ayano's powers, which often manifests naked ([[InnocentFanserviceGirl not that she minds it]], [[AllMenArePerverts but as for the boys...]]).
* AwesomenessByAnalysis: Kakeru defeats several powerful psychics mostly by figuring out their weak points and brutally exploiting them.
* BadassNormal --> EmpoweredBadassNormal: Kakeru thought he had no psychic powers, until later he discovers that he has the power to control time and space within the range of his Perfect World.
* ChivalrousPervert: Kakeru -- and to a less extent on the perverted aspect -- Kaito, Xiao Long and Joi.
* CombatMedic: Xiao Long.
* [[spoiler:CosmicRetcon: Kakeru traveled back in time to avert the past events that led to Tomoe's death and her father Arata Ikushima's StartOfDarkness, [[HeroicSacrifice knowing all too well]] [[RetGone that he may never come back]] -- which he surprisingly does.]]
* CursedWithAwesome: Not a few naysayer are warning against Kakeru using his time-and-space manipulation abilities at will.
* DarkAndTroubledPast: Xiao Long and Takemaru.
* [[spoiler:DeathEqualsRedemption[=/=]RedemptionEarnsLife: Oddly played by Ikushima in the end. After Kakeru mortally impales him, Tomoe's spirit appears to comfort her father and allow him to accept his fate, making sure they are TogetherInDeath. Then the latter trope is applied when Kakeru travels back in time ([[HeroicSacrifice at the risk of]] [[RetGone permanently deleting him from existence]]) to prevent Tomoe's death and thus indirectly avert her father's StartOfDarkness.]]
* DeusExMachina: [[spoiler:Kakeru's reappearence in the end, after he [[HeroicSacrifice erases himself from existence]]. There's very little explanation to it and the title of the last chapter is "Miracle".]]
* DoesThisRemindYouOfAnything: One of the bonus {{Yonkoma}}s has Joi and Kaito marveling at how ''big'' a giant cyclops is.
* DreamingOfThingsToCome: Joi's power is seeing into the future.
* FiveManBand: TheHero is Joi Touma, TheLancer is Kakeru Hase, TheBigGuy is Kaito Himuro, TheSmartGuy is Xiao Long Bai, TheChick is Ayano Fujimura, and together work as a team. See those trope for more detail.
* FourEyesZeroSoul: Ikushima.
* HeroesWantRedHeads: In the manga, Ayano is drawn with dark red hair.
* IJustWantToBeNormal: All the psychics.
* IJustWantToBeSpecial: Kakeru.
* InnocentFanserviceGirl: Ayano; it really doesn't help that her teammates are all [[AllMenArePerverts guys...]]
* MobstacleCourse: Of zombies!
* MeaningfulName: The kanji for Kakeru means 'flight', and fleeing is one of the things he does best; Takemaru means 'fierce'.
* NerdsAreSexy: Joi.
* OfficialCouple: [[spoiler:Kakeru and Ayano in the end.]]
* PlayingWithFire: Kaito.
* PsychicPowers: ''Hello''! It's called ''Psycho Busters'' for a reason!
* RealityWarper[=/=]TimeMaster: The nature of Kakeru's powers.
* RetGone: [[spoiler:The ultimate fate of the Ikushima who served as BigBad of the series; in his place is the kinder dad whose daughter Tomoe never died and thus caused his StartOfDarkness. Kakeru was also supposed to have vanished for good after traveling back in time to {{retcon}} Ikushima and Tomoe's destinies, but he got better.]]
* SmartPeopleWearGlasses: Joi.
* StartOfDarkness: [[spoiler:Ikushima used to be a loving father, until Tomoe died in a bus accident.]]
* TemptingFate: In the first chapter, Kakeru says that there's no way that the exciting stuff he sees on TV or videogames could ''possibly'' be true. [[GotVolunteered Guess]] [[JumpedAtTheCall what]] [[PsychicPowers happens next]].
* TheHero: Joi Touma, {{clairvoyan|ce}}t leader of the fledgling psychic LaResistance.
* TheLancer: Kakeru Hase, the protagonist and fledgling RealityWarper[=/=]TimeMaster.
* TheBigGuy: Kaito Himuro, the HotBlooded [[PlayingWithFire pyromancer]].
* TheSmartGuy: Xiao Long Bai, specialist in qigong, a special technique that requires lots of thinking.
* TheChick: Ayano Fujimura, the {{[telepath|y}}, is used to bring Kakeru into the group.
* WakeUpGoToSchoolSaveTheWorld: Starting in volume 3.