Watashi no KoibitoAtashi no Koibito, my Lover

One day, Emi receives a call with a confession to her popular and beautiful older sister. Without thinking, she hangs up. But on the day that she enters high school, by some unknown coincidence she meets this caller who had confessed over the phone... And thus, an overflowing love begins... Volume 2 contains the oneshots "Second Bloom" and "An Unrequited Love"