Joshi Daisei ga Goukon de Onee-san ni Mochikaerareru Hanashi

College girl Kawada Rika gets roped into going to a mixer where she meets an older girl named Suda Natsuko and they are immediately enamored with each other.

Notes:
- Initially self published until chapter 13 and later serialized on Line Manga.
- Includes 3 extra chapters.