This one gets under your skin by making the power fantasy feel like a trap. Kaihei doesn't earn the chairman's seat at St. Luminous, he inherits it from a dead grandfather, and the job comes with the authority to write the rules and hand down punishments at a school where he's the only boy on campus. Then a student is already missing before he's finished settling in, and the whole series tilts from wish fulfillment into something colder and quieter. Be honest with yourself going in: the mystery is thin and the 1998 finale barely bothers to close the loop, so the payoff is atmosphere, not answers. And yet people who watched these 13 episodes decades ago still bring it up unprompted, which is its own kind of proof. Some shows haunt you precisely because they never explained themselves.
Kaihei inherits his late grandfather's position as chairman of St. Luminous Mission High School, an all-girls academy where he becomes the sole male student overnight. His new authority puts him in an awkward position: enforcing rules among classmates who resent his sudden elevation, while navigating the strange politics of an institution built entirely around female students. Then a girl vanishes without a trace. Trapped between protecting the school's reputation and uncovering the truth, Kaihei teams up with a small group of allies to investigate. They can't alert the authorities. They can't let the disappearance become public. What begins as a missing person case spirals into something far darker, revealing that St. Luminous harbors secrets buried long before Kaihei arrived. As graduation approaches, he realizes the school itself may be the real mystery. This is mystery-thriller material with psychological weight. It pulls you between the mundane stress of high school politics and creeping dread about what actually happened. Perfect for viewers who want their supernatural mystery grounded in genuine unease rather than spectacle.