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.

Hinata convinces Aoi to try climbing a mountain, but Aoi thinks they should start with a small mountain and work their way up to the big ones.

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

It's Aoi's turn to pick the mountain, so she calls on her new friend to help.

Aoi picked the mountain but now she needs the right equipment.

Aoi and Hinata embark on their second climb and meet some interesting people along the way.

Hinata teaches Aoi, mountain manners and learns about giant flying squirrels.

Aoi, Hinata, and Kokona help each other down the mountain.

In preparation for their next trip, Aoi invites Kokona over to help her cook snacks.

Aoi, Hinata, Kaeda, and Kokona meet up for a picnic at Hannou River.