On the way home from work one night, Kiriyama Taiyou picks up a friendly stray cat. Pets are strictly off-limits at his apartment building, but he attempts to sneak in his new feline friend anyway, only to be caught by the grumpy building manager, Taira Asahi. Taiyou begs Asahi to let him keep the cat until he can find it a new home. To his shock, Asahi agrees. The catch is that Taiyou has to be his gofer until the cat is gone.

As Taiyou runs himself ragged completing errands for Asahi, he begins to notice a kind heart lying beneath his prickly exterior, as well as the unrequited crush on someone that Asahi has been nursing for years. Taiyou wants to make Asahi’s romantic dreams come true, but his attempts at playing cupid lead to questions about his own growing feelings.

The story is a standalone boys love romance set primarily in and around a Japanese apartment building where the two protagonists live. The central conflict arises from the month-long agreement between Taiyou and Asahi, a deadline tied to finding the cat a permanent home. As Taiyou performs various tasks for the building manager, their forced proximity reveals hidden depths in both characters. The narrative arc follows Taiyou's shift from viewing Asahi as merely grumpy to recognizing his hidden kindness, while Asahi gradually opens up about a long-held, unrequited love for another person. This revelation creates the story's primary emotional tension, as Taiyou must decide whether to help the man he is falling for find happiness with someone else or risk his own heart in the process.