The Boxfish and the Minamata Sea (Series)

Based on a picture book titled Hakofugu no Negai (The Wish of the Boxfish) by Sakana-kun, the story is about the main character, Hakofugu, who is unsure of himself, who meets Himetatsu, a lost child, and together they begin their adventure to the "Sea of Minamata". (Source: Patreon)