Nakajima Yosuke, once a talented young man, is now in his 40s. Unfortunately, he experienced setbacks and returned home, but his birth mother got divorced and his father remarried a stranger, which only added to his feelings of depression. His father ignores his son and enjoys himself every night with his new wife, Mitsuko, as if to spite him. From Yosuke's perspective, it was only natural that he began to see Mitsuko as a woman rather than a mother...
