Joshi Daisei ga Goukon de Onee-san ni Mochikaerareru Hanashi

Vol.1 Chapter 20
Vol.1 Chapter 19
Vol.1 Chapter 21
Vol.1 Chapter 19
Vol.1 Chapter 21
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.