Akito actually listens when people talk to him instead of short-circuiting into nosebleeds like every other harem lead. The fanservice hits the beat you want it to, but the real joke is watching four girls absolutely lose their minds trying to out-cute each other while he just stays standing there, competent and vaguely amused. A little sister complex plus three student council girls in one house means someone is always escalating, and the show knows exactly how funny that gets.
Akito's quiet life gets turned upside down when his younger sister Akiko returns after years apart, and she's determined to monopolize every second of his time. Her obsessive affection becomes the least of his problems when three beautiful student council members move into their house, each with their own reasons for being there and their own interest in getting close to him. What starts as awkward cohabitation quickly spirals into comedic chaos as Akiko wages an all-out war against her new rivals, using every trick in the book to keep Akito's attention focused solely on her. The other girls aren't backing down either, and they've got schemes of their own. Between Akiko's relentless advances, the girls' competitive antics, and the constant misunderstandings that pile up daily, Akito finds himself caught in a whirlwind of romantic confusion where nobody's intentions are quite what they seem. It's equal parts slapstick humor and fanservice, built on the chaotic premise that living under one roof with multiple people who want your attention can only end in complete and total madness.