Monami, who lost her husband and lives with her son. Katsuji, the heir of the landlord, noticed the size of Monami's breasts. Monami's part-time income was not enough to cover her living expenses and she was in arrears with her rent. Katsuji was claiming to be collecting rent arrears, but from the beginning he was attracted to Monami's ample body and approached her with his bad friend.