Kōichi YamashinaKōichi YamashinaQueuebrick VideoOverviewDiscussionKōichi YamashinaDirectingRateNA/10 avgNo member ratings yetRateOverviewDiscussionFilmography3Seen0Favorites0FilmCreditOOn the Side Street2026 · DirectorDirectorImperfect Me2025 · DirectorDirector河童になるActor, Writer, DirectorActor, Writer, Director