Yota becomes motivated to learn more about where Hina came from. Finding out more entails traveling to a beach far from his home town. Since Hina has never seen the ocean, the two take the trip together.

The end of the world has come and gone. Yota's efforts to find Hina turn up nothing. However, a lead is sitting under Yota's nose. Will he realize before it is too late?

Yota's time at Yamada Sanatorium is coming to an end. Will he have to say goodbye to Hina forever?