Setoutsumi (2017)

Utsumi and Shokichi spend time with them. They fish, bathe in the river and have fun.
Utsumi is a high school student who has few friends. To pass the time before he attends a private institute after school, he frequents a riverside. One day, Shokichi Seto, who has left the soccer team and has nothing to do, appears and the two begin to spend time together. Ichigo Kashimura and Hatsumi from the same high school join them and they pass the time fishing, bathing in the river, and having fun.