I Have Been In A Relationship With Her Sister For 6 Months. Whenever We Meet, We Always Have Nakadashi Sex. Yuna Hasegawa

Thinking back now, maybe I was interested from the moment she (Akane) first introduced me. When I found out that today was her older sister's (Mayu) birthday, I couldn't sit still, and before I knew it, I was in front of her older sister's house. I thought I would ring the bell and leave if there was no answer, but her older sister came out. Ah, I really do love her. My feelings turned into certainty.