Joshi Daisei ga Goukon de Onee-san ni Mochikaerareru Hanashi

Vol.1 Chapter 26
Vol.1 Chapter 25
Vol.1 Chapter 26.5
Vol.1 Chapter 25
Vol.1 Chapter 26.5
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.