Set within the confines of an all-boys high school, the series follows the mundane yet wildly imaginative daily exploits of three close friends: Tadakuni, a relatively straight-laced boy who frequently questions the absurdity around him; Hidenori, an intellectual instigator with a penchant for bizarre theatricality; and Yoshitake, a carefree prankster prone to acting purely on impulse. Lacking any female students to impress, these teenagers channel their boundless teenage angst and boredom into hyper-dramatic interpretations of the utterly trivial, transforming standard high school tropes into epic struggles of ego and imagination.Driven by the sheer monotony of student life, the boys invent complex scenarios designed purely to amuse themselves. Their motivations rarely extend beyond chasing cheap laughs, curing boredom, or escalating minor misunderstandings into catastrophic social battles. Notable dramatic arcs revolve around intense attempts to try on their younger sisters’ skirts—resulting in a profound,
existential crisis regarding femininity—and elaborate, over-the-counter roleplaying sessions where they act out fantasy RPG battles using school supplies as legendary weapons. Another central storyline follows their reluctant, yet inevitable, encounters with the local girls' high school across the river. These interactions are fueled by intense
social anxiety and wildly inaccurate assumptions about female behavior, leading to excruciatingly awkward public humiliations and desperate bids for cool aloofness that invariably fail.A recurring subplot highlights the unspoken hierarchy of their peer group, particularly their interactions with the legendary Literary Girl, a brooding student who sits by the river writing dramatic fiction, completely unaware that Hidenori frequently intercepts her monologues by playing along with her imaginary scenarios. Meanwhile, secondary vignettes explore the lives of the school council president—a tyrant obsessed with maintaining order who is secretly terrified of ghosts—and a gang of delinquent youths who repeatedly try to act tough, only to be effortlessly outshone or bewildered by the sheer weirdness of the main trio.The narrative culminates not in a grand graduation or romantic resolution, but in a surreal, meta-textual climax where the characters actively complain about their production budget, the changing seasons, and the absurd limitations of their own medium. Throughout, the overarching storyline remains a celebration of adolescent stupidity, loyalty, and the strange, fleeting camaraderie forged in the crucible of teenage boredom. Ultimately, the boys realize that while their youth is entirely devoid of the glamorous romance typically depicted in media, their bizarre, self-generated theatricality is uniquely memorable. They continue their endless cycle of sitting in classrooms, plotting pranks, and staring out windows, forever locked in the chaotic, golden age of being a teenage boy with nothing better to do.