Ones Who Can't Be Controlled

My Roommate is a Cat – Season 1

Subaru and Kawase are having a meeting at Subaru's house to discuss cover designs and promotions for the upcoming print release of Subaru's novel. Kawase says there's been strong demand from a store owner to hold an autograph signing event, but the antisocial Subaru is repulsed by the idea and refuses. Then, suddenly, the doorbell rings, and Subaru's house is overrun with children!