Aoi spends most of her time alone, but an old friend from middle school has arrived to make good on an old promise.

With the help of Hinata's dad, the girls familiarize themselves with the necessary gear to climb.

Aoi meets a girl from her school who is crazy about backpacking.

A trip to Naguri Lake? Sounds like fun, especially since Aoi gets to try canoeing with her coworker. But does this outing feel a bit…unusual?

The girls head up the Subashiri Trail despite fears about the weather, and things seem to go smoothly! But past is all too often prologue, and Hinata must make a big decision…