This show knows exactly what it is: a premise so absurd it loops back to being honest about why it exists. Shungo keeps getting thrown into situations designed purely to torture him, and he reacts like a real person would instead of playing the straight man with dead eyes. The comedy lives in that gap between "this makes no sense" and "yeah, that's exactly what would happen if your sister was this chaotic."
Shungo's peaceful life as a high school student gets turned upside down when his absent sister decides to move two siblings into his sprawling mansion. The catch: Mayu, the younger of the two, suffers from severe androphobia and desperately needs to conquer her fear of men. The solution his sister proposes is as unconventional as it is chaotic: force Shungo and Mayu into constant proximity. Shared rooms, shared beds, shared bathing spaces, every scenario designed to push Mayu toward recovery. Shungo finds himself playing reluctant exposure therapist while trying to maintain his sanity and reputation. Then Reika Hojo, the uptight student council president, somehow gets roped into the household as their maid, complicating matters even further. What follows is a constant stream of misunderstandings, awkward situations, and collision after collision between Mayu's panic attacks and Shungo's exasperation. The chaos never stops escalating, and Shungo's ordinary life becomes anything but. It's pure comedic farce powered by ridiculous circumstances and characters constantly at odds with their own predicaments.