Complex sentence: To clean himself, he visits a public bath which he had frequented as a child; the owner, Tsuyako Yamashita (Kazuko Yoshiyuki), is the mother of an old classmate of Daigo's (portrayed by Tetta Sugimoto).
Split into simpler sentences: To clean himself, he visits a public bath which he had frequented as a child. It is owned by Tsuyako Yamashita (Kazuko Yoshiyuki), the mother of Daigo's former classmate Yamashita (Tetta Sugimoto).