Because of me hes dead!! I killed him. Its my fault. My love. Mianhe. I should have died, not you. Not you.A boy appeared. "It couldnt have been him. Hes dead. No. Its not him, right?A story of a girl whom lost her beloved one in a car accident. A few years had passes. A boy appeared.  A teacher confessed. A love triangle happened between these people. Which one will she choose? Who will be the only one for her?   Foreword                                 You/ Han Ga InYou/ Han Ga In18 years oldA High School SeniorSmart, Cute, Beautiful, ShyAbility :- Singing and dancing                                                                                CHO KYUHYUN                                                    Cho Kyuhyun18 years oldHigh school seniorSmart, Cute, Hot, HandsomeAbility :- Singing                                                LEE DONGHAELee Donghae20 years old ( Maknae Teacher )Homeroom teacherSmart, Cute, Hot, HandsomeAbility :- Dancing