It all starts with Mizuki Takashima, a 16-year-old girl who is excellent in everything but, her life is broken. She wants to start over and kill herself. She changes schools and attends Sawako high school. One day, a 17-year-old boy named Ichiro Takahashi, the most popular boy in Sawako High, had her life put right side up again. They have a strong bond, but sometimes there are ups and downs. Thus begins their story