The Stranger by the Beach (2020) Japanese Movie Trailer English Subtitles (海辺のエトランゼ　本予告　英語字幕)

Shun Hashimoto is a gay novelist living in Okinawa who meets Mio Chibana, an orphaned high school student living with his relatives after his mother's death. However, Mio's reaction reminds him of the estrangement from his parents after they discovered his sexual orientation. As Shun and Mio grow closer, Mio confesses that he is moving to the city, but promises to keep in contact once there.

Three years later, Mio suddenly moves back and confesses he is in love with Shun, but Shun is overcome with guilt from depriving him of a "normal" life. Meanwhile, Shun's childhood friend and ex-fiancée, Sakurako, arrives at the island to persuade him to return to Hokkaido due to his father's poor health. Shun is adamant about staying with Mio, but Mio urges him to return to reconcile with his family. Realizing Mio is genuinely in love with him and sensing the truth in his words, Shun decides to return to Hokkaido and asks Mio to accompany him.