Yumiri Hanamori (Grimoire of Zero’s lead) is Nadeshiko Kagamihara, a friendly (and hungry) girl who cycles to Mt Fuji, inspired by the scene on the back of the 1000yen bill, and Nao Tōyama (Kinmoza’s Karen Kujō) is Rin Shima, a camping lover she meets on the trip.
We were previously introduced to the leads of the winter 2018 TV anime adaptation of Afro’s ongoing cute-girls camping manga YuruCamp△ (Yen Press has licensed the series for North American release, with plans to release it as Laid Back Camp).