She was his best friend that he grew up with, and she later on grew to become his to start with girlfriend. He was intending to start a connection along with his classmate, Natsumi Kogahara. But Abruptly, he swapped his overall body with his ex-girlfriend, Lemon Nishikawa. Premise: Sasaki's work https://www.intensedebate.com/people/trescakowalk