The U-17 (Under 17) training camp, is a selection camp for top potentials in the Japanese tennis world. Before, only high schoolers were able to participate, but because the level of middle school tennis players has risen a lot some of them were invited as well.

The camp itself is state of the art with a high tech security system (which is also utilized in the Revolutionary Brigade member's training), state of the art machines, high class food, comfortable dorms, a luxurious bath house, etc.

The coaches are professional and analyze the players through monitoring cameras and computed data of each player's profiles. The current director is mysteriously absent from his position, therefore Yukio Kurobe substitutes as a temporary director.