The Summer of Whales (2014)

Chuya, who spends his days in a local city without any purpose or dream, suddenly decides to go to Tokyo. His best friends: J, Gizmo, and Machida, from high school try to hold a big farewell party on the last day that Chuya spends locally, but Chuya remembers the past. It seems that he is clinging and hesitating to move. There, the three make a proposal for Chuya, but Yumiko, a longing senior who should be active as an entertainer in Tokyo, appears, and Chuya's heart shakes even more.

Unfortunately the movie The Summer of Whales is not yet available on HBO Max.