Hanakappa Special: Bokura no Daibouken

Synopsis

A member of the Kappa tribe becomes afflicted with a rare sickness that stops the flowers on top of their head from blooming. To cure them, pollen from the Papon flower is needed, a plant that only grows on distant Papon Island in the eastern sea. Wanting to help the sick adult, Hanakappa and their friends embark on an adventure to reach Papon Island.