This one runs on a single perfect joke and refuses to blink: a succubus who is terrified of men. Mayu Tsukimura can't be in a room with Shungo without going scarlet, and Ryoko's answer is to shove them into the same bed, the same bath, the same everything, then call it therapy. Shungo spends twelve episodes being the most competent man alive at everything except getting out of a compromising position, and the show knows exactly how funny that is. Reika Hojo turning up as the household maid while still ruling the student council is the kind of escalation that shouldn't work and absolutely does, and Mikihiro tagging along keeps the house permanently over capacity. Nothing here wants to mean anything. It wants steam, screaming, and a punchline every ninety seconds, and it delivers on schedule. Watch it when your brain is done for the day and you just want the ridiculous premise played completely straight.

Shungo's peaceful life as a high school student gets turned upside down when his absent sister, a mercenary who is rarely home, decides to move two siblings into his sprawling mansion. The catch: Mayu, the younger of the two, suffers from severe androphobia and 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. Then Reika Hojo, the student council president, gets roped into the household as their maid, complicating matters even further. The chaos keeps escalating, and Shungo's ordinary life becomes anything but. The result is an ecchi comedy with a fantasy twist, powered by ridiculous circumstances.