Bokutachi wa Shitte Shimatta傻傻未知爱 ; 僕達は知ってしまった ; Bokutachi wa Shitteshimatta ; Lebe deine Liebe ; LOVE 教程 ; Love-Affair ; We Came to Know it ; We Experienced the Affair ; We Know It ; Lebe deine Liebe - We experienced the affair ; A romantic love story ; Chưa biết yêu ; Experimentamos el romance (spanish) ; Романтична любовна история(bulgarien) ; Naranasan natin ang pagmamahalan

Kaji Kotori is a shy girl and was always bad at making new friends, especially with guys. Since the start of high school she has been made fun of by Kaji Yukito who’s the center of attention in the class. Rumors are that he was a delinquent during Middle school but he doesn’t look like one. Here comes the life of Kotori and how she adapts to love. ~~~ I met him by chance and I knew love. My imagination was way different than reality. My lack of restraint of this emotion open the gate of my future world. Kotori, the summer I was fifteen…