While the original story has been classified as a BL (boys love) manga, the anime has a surprising amount of depth to it. Overview: ‘The Stranger by the Beach’ is a 2020 anime film adaptation based on the 'L'etranger' manga series by Kanna Kii. Mio eventually returns to Okinawa as a 20-year-old with the intention of professing his love for Shun, but it’s been three years since the two last met and a lot of things have changed for Shun in the interim. One day, he meets an orphaned high schooler on the beach called Mio and the pair slowly get to know each other before Mio abruptly announces his plans to relocate from the island into the city on the mainland. Synopsis: Shun Hashimoto is an aspiring novelist who lives in Okinawa after his parents disowned him for being gay.