It's the Taisho era—a time filled with the scent of romance, and people's hearts are still filled with compassion. Unzen, Sukayu, Unohana, Oshamanbe, and Aso are all ordinary (?) male students at Mayunan High School, who spend their days lazing around in the clubroom of the "do-nothing club" Earth Defense Club, and live together in the Kurodama dormitory. One day, while the five are taking a morning bath at the Kurodama dormitory, they notice something slimy moving in the bathtub. When they finally manage to catch it, it turns out to be a talking Pallas's cat named Nuru! Nuru has come from the distant future with a serious mission to inform them that the Earth is facing an impending threat of destruction. While he says he wants to protect the Earth, he says he's only come to warn them of the crisis, and that it's up to the five of them to decide whether or not they want to fight for the Earth... Isn't this just an attempt to dodge responsibility? The Defense Club members are suspicious. "If either is fine with you, I'll do it! That's more fashionable!" Unzen enthusiastically says. The five decide to fight with free will, and Nuru transforms them into the Fashionable Romantic Troupe using cat science. Meanwhile, a mysterious trio called the Bankara New Elite Squad are scheming in the shadows. They are plotting to take over the Earth.

Fuuta-kun has never owned a cat before, but his younger sister, Pii-chan, moves into his house with the round gray cat Kyuruga. Inexperienced with cats, Fuuta-kun has no idea what to expect, and each night after he returns home is marked by odd and endearing surprises from his new pet.

Sequel series to Urawa no Usagi-chan.

Tsuyoshi, a 22-year-old third-year university student, spends his days juggling classes and his food delivery job, with a can of strong chuuhai always within reach. Living alone in a small apartment, his mundane routine takes an unexpected turn when he finds himself entangled with Yui Koriyama, a married woman he has admired since childhood. What begins as an innocent connection soon escalates into something far more intimate, blurring the lines between longing, desire, and morality. Set against a backdrop of quiet nights and stolen moments, this risqué yet comedic tale explores the thrill and complications of an illicit romance—where every encounter is both intoxicating and dangerous.