Tennis: I Have a Mystery Shop

In the world of Net King, there is such a mysterious store. Unlike other stores, this store does not sell clothes, jewelry and the like. This store sells skills. In this store, you can buy all kinds of skills as long as you pay. Zero short ball, zero serve, field, light shot. In short, there are all kinds of skills. The owner of the store is a young man. One day, a boy with a kelp head appeared in front of the store. Seeing this, Kitaki came to the young man. "Young man, I am surprised to see your bones. You are a good young man. I happen to have this skill here. I think you are destined to have it. I will sell it to you for ten thousand." "Huh? Do you think this book is inappropriate? It doesn't matter, there is more!" This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.