The world Hanako-kun builds looks like nothing else on TV, every frame designed as if the show itself is a supernatural object you're not supposed to be seeing. Nene walks in expecting a wish-granting ghost girl and finds a genderflipped boy in a school bathroom, which sounds ridiculous until the show turns that absurdity into genuine tenderness and real darkness by episode three. The comedy never stops, but it becomes the thing masking something far stranger underneath, and the animation follows that instinct, treating every joke and every broken moment with equal visual weight.
Nene Yashiro has heard the whispers circulating through Kamome Academy for years: summon Hanako-san in the girls' bathroom on the third floor, and any wish will come true. Desperate for romantic luck, she follows the ritual and finds herself face to face with a supernatural being who shatters every expectation. Hanako turns out to be a boy, and a distinctly unhelpful one at that. Rather than grant her wish cleanly, he drags her into his world of supernatural oddities and student mysteries that plague the school. Bound to Hanako after a deal goes sideways, Nene becomes entangled in investigating the Seven Mysteries of Kamome Academy. What begins as her frantic attempts to escape this arrangement transforms into something stranger. Hanako operates by his own rules, with his own agenda and secrets. The deeper Nene investigates, the more she realizes her wish was never the real story. Something far more complex lurks beneath the surface of his bathroom supernatural shop, and Hanako's past holds the key to understanding him.