Wanting to repay Hinata for the souvenir she got her from Mt. Fuji, Aoi invites her for a late night climb up Mt. Tsukuba to treat her to a night view at the top. Arriving at the top, Aoi resolves to once again take on Mt. Fuji.
Hearing about "mountain coffee" from Hinata's father, Aoi, feeling provoked by Hinata, becomes determined to try it as well, despite finding coffee bitter.
Aoi makes plans to go to Gunma with Honoka while Hinata, unable to get in touch with Aoi, ends up making plans to go to Mt. Akagi with Kokona on the same day.
As Kaede invites everyone on a camping trip across Mt. Mizugaki and Mt. Kinpu, Hinata starts to become hostile towards Aoi upon hearing she spent the night preparing food with Kokona. While acting stubborn and going against Aoi's suggestions of taking a safer route, Hinata secretly injures her knee.
While trekking up Mt. Kinpu, Hinata becomes overwhelmed by her knee injury, prompting Aoi to stay with her and escort her back to camp. Along the way, Hinata reveals that she was worried Aoi would drift away from her to spend time with other friends.
