Shizuka is a famous song-writer and a father to Botan from a failed marriage. Botan is lonely and asks if he can have a cat. Shizuka tells him no, but Botan brings one home anyway... a very human-looking cat who is actually a man who Shizuka slept with before named Umekichi! Will Umekichi get to stay? Will Shizuka figure out what Umekichi reminds him of his past? And will he sleep with him again even though he's Botan's pet?