Koharu meets Hiyori's childhood friend Koi, who works at a fishing shop. Hiyori arranges a trip to a designated fly fishing location for Koharu.

The girls go fishing on Ichika's boat and invite Futaba to come with them. Later, they all enjoy a nice meal at Hiyori and Koharu's house.

Koharu tries to convince her dad to let her go on a fishing and camping trip with just Koharu and Koi, which causes a disagreement in the family, and results in Koharu and Hiyori running away from home.