Sarazanmai

In a world where mythical creatures known as Kappas exist, three high school students named Kazuki, Toi, and Enta stumble upon a mysterious Kappa named Keppi who proclaims himself the heir to the Kappa Kingdom's throne. Keppi forcibly takes their Shirikodama, a mythical organ that contains their deepest desires, and transforms them into Kappas. To regain their human form, they must collect the Shirikodama of Zombies, but first, they must learn to connect with each other in a special way. Meanwhile, two policemen, Reo and Mabu, are investigating a series of strange occurrences in the city. As the boys embark on their quest, they discover that the line between friendship and desire is not always clear, and that true connection requires a deeper understanding of themselves and others. Will they be able to overcome their challenges and restore their humanity?

You can stream Sarazanmai on: Apple TV Amazon Store

Some TV shows that have similar genres and were produced around the same time as Sarazanmai include Hilda, Rick and Morty, Futurama, Uglymug, Epicfighter, Panty & Stocking with Garterbelt, Rise of the Teenage Mutant Ninja Turtles.