This is a story that has nothing to do with tennis. This is a story about childhood sweethearts. This is a story caused by "habit". To my favorite Atobe Keigo. I wish there was a story with you, Atobe. Your world is too wonderful, so I gave Ya Se the identity of a mysterious Chinese family. One is obsessed with medicine and the other is obsessed with tennis. Only understanding and tolerance can bring two people with such a huge gap together.