Breakfast Club is a five volume manga about life in a boy's dorm at a high school. The main couple in the first volume is Masamoto and Izuka, who are roommates. The rest of the volumes center mainly on Hiroki and Akira, who are also roommates.

Not to be confused with the John Hughes movie ''Film/TheBreakfastClub''.
!!!This manga contains
* AlwaysIdenticalTwins: The Takenaka brothers who no one except for the resident ChivalrousPervert can tell apart.
** StrongFamilyResemblance: They have a younger brother in the same school who's exactly like them.
* BetaCouple: Masamoto and Izuka become this from the second volume onwards.
* {{Bishonen}}
* {{Blackmail}}: What they were hoping to do with the manager, but it backfired.
* BoysLove
* CameraFiend: Sakaguchi
* TheChikan: Akira gets molested in a train.
* ChivalrousPervert: Hiroki
* ClosetKey: Izuka and Hiroki for Masamoto and Akira, respectively.
* DistractedByTheSexy: The guys sent Akira to distract Sakaguchi, which leads to Sakaguchi planting a ForcedKiss on Akira.
* EvenTheGuysWantHim: Akira.
* HookerWithAHeartOfGold: Izuka
* {{Hypocrite}}: The manager is against homosexual relationship between students but he himself is gay or at least bi.
* InterruptedIntimacy: Akira and Hiroki are interrupted when they are cuddling with their clothes disheveled after the act by the manager.
* MakingLoveInAllTheWrongPlaces: They shouldn't have sex in the student council room or the bath.
* TheMole: Sakaguchi
** PlayingBothSides: Sakaguchi
* NotWhatItLooksLike: Izuka finds Akira and Masomoto [[{{ItMakesSenseInContext}} kissing]] and immediatly assumes the worst.
* OneGenderSchool
* ThePeepingTom: Sakaguchi
* RapeAsBackstory: Izuka
* SchoolNurse: Akira gets roped into being one in the school festival.
* SorryToInterrupt: In Masomoto's first night he finds Ootani-sensei and Hiroki being intimate in the bath and quickly closes the door. Akira enters Izuka's and Masamoto's room while they are being intimate.
** CoitusUninterruptus
* {{Seme}}: Manager and Sakaguchi are referred in the character introduction as semes. From the main characters Hiroki and Masamoto take this role in their relationship.
* SpotlightStealingSquad: Hiroki and Akira.
* StickyFingers: There's a character early in the manga who is guilty of this.
* TakingTheHeat: Happens twice when when the manager finds out about homosexual happenings in the dorm. The first time Ootani-sensei takes the blame, and in the second time Hiroki takes the heat.
* TeacherStudentRomance: Ootani-sensei and Hiroki have a short lived one.
* ThoseTwoGuys: The twins.
* {{Twincest}}: Parodied.
* {{Uke}}: Ootani-sensei, Izuka, and Akira.
* UnrequitedLove
* WholesomeCrossdresser: Akira against his will; the third volume even comes with a paper doll of him to dress him up in a female school uniform, nurse outfit, and a waitress outfit.