This story begins with Shin being a delinquent in high school until he got to know a certain girl. She was the light in his darkness. She made him want to be better. Eventually, Shin noticed how much of an impact she had on him, and he began to develop affection for her. Each day they spent together, the more his love grew. They spent so much time together that Shin thought they were dating already.   "Huh? Aren't we already dating?"