I'm sorry for being one day late with this round of O3! D: To make up for it, the prize for this one would be two random cards and a choice tennis ball
I can't really think of a hint that wouldn't make it obvious... Okay, here's one. You know, at least things like that ate never permanent...
This round ends on Saturday, May 6th is closed
Last round's answer - Kaidou was the odd one, because he doesn't have a sibling in any of the rival tennis teams