When Shima nearly drowns trying to retrieve a picture, he’s saved by a merman named Isaki. Despite their differences, they begin to bond, but love across species isn’t simple.
Unfortunately the movie This Boy Caught a Merman is not yet available on HBO Max.
| Directing | Soubi Yamamoto | Director |
| Sound | Naoto Yamaya | Sound Effects |
| Sound | Haru Yamada | Sound Director |
| Sound | Hikaru Midorikawa | Theme Song Performance |
| Production | Noritaka Kawaguchi | Executive Producer |
| Writing | Soubi Yamamoto | Writer |
