Kerokero Keroppi no Bouken: Pink no Kinoko

Keroppi's brother falls ill with frog fever and loses his voice. Waiting for the sickness to pass feels unbearable to Keroppi, especially because his brother has an important secret he wants to share, so the promise of a rare pink mushroom that can cure him is enough to send Keroppi searching for it.

The cure is not simply waiting to be picked. A frightening monster guards the mushroom, turning Keroppi's loving mission into a test of courage. Determined to help his brother recover, he must find a way past the danger and bring the precious mushroom home.