I mustered up the courage of my life and confessed to my classmate, a humanities girl with excellent grades and a good personality.I couldn't believe it, but I got a girlfriend for the first time after receiving an OK reply!And yet...A childhood friend who lives in the house next door and one year older sister Minami changed suddenly!A virgin for her...No way!I got her!Nevertheless, I had my first experience with her at school... even though I had a girlfriend...with her childhood friend's older sister...Her stimulus is too strong...Even though it's my long-awaited sex with her...I can't get excited at all! ?