Osamake

Osamake is a light novel series that received an anime adaptation which aired in 2021.

The story follows Sueharu Maru, a high school student and former actor who has never had a girlfriend. Childhood friends with the popular Kuroha Shida who one day confesses her feelings to him, she is instantly rejected as he doesn't see her in the same way, along with the fact that he has had a longtime crush on renown author Shirokusa Kachi. However, he is devastated to learn that Shirokusa already has a boyfriend, and is then approached by Kuroha, who offers to help him get revenge.

Episode 8
Sueharu and his friends relax at the beach after arriving at Shirokusa’s family’s villa.

Episode 9
The beach trip continues.

Episode 11
Maria and Shirokusa get distracted by Sueharu's muscles when they were going to help him change.

ED (Episode 9 Version)
Tetsuhiko wears an unbuttoned shirt at the beach.