柴犬
is a 7-year-old male Shiba Inu mix who was once a stray. A kind woman named Masumi and an equally nice man named Sanosuke 10 years older than her rescued him. Masumi and Sanosuke married and took Chiyomaru in and opening an Italian restaurant. Sanosuke began cheating on Masumi, and she worked herself to death. Machiko disliked Chiyomaru, and eventually beat him to a near-death state and abandoned him far away.