If it's not possible, it's not possible. It's not really a "have no idea" kinda situation, either Kairosoft added the functionality or they did not. Note: I haven't played Tennis Club Story, so I have no idea, just saying don't get your hopes up.
Also, you may want to ask on Reddit, you may have better luck finding an answer there (or confirmation the answer is no if that's the case). Not many people use the wiki forum.