Appears in the Shinobu/Sakura arc. Shouta is in the same class as Yukari, whom he has a one-sided crush on, and suspects that her sudden disappearance is connected to the mermaid's flesh myth. He has been friends with Shinobu, Takaaki and Saya since they were kids. After Hiromi is turned into a mermaid, Shouta comes into possession of a notebook which is later revealed to be a newer copy of the original.