Joshi Daisei ga Goukon de Onee-san ni Mochikaerareru Hanashi

Vol.3 Chapter 49
Vol.3 Chapter 48
Vol.3 Chapter 50
Vol.3 Chapter 48
Vol.3 Chapter 50
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.