Kao dake yoi Classmate ga, Yatara to Guigui Kuru Yuri no Hanashi.
Description:
Kaido Ritsu has a boyfriend, whom she is dating ー just because they're both members of the popular crowd. One summer day, as she and her boyfriend were about to celebrate their one-year anniversary, her classmate Yarai Tsuzuri sees them about to kiss and... intervenes?
This story is about an ordinary high school girl falling in love with another high school girl who is energetic, kind, outgoing, and beautiful, too....