Yatogame-chan Kansatsu Nikki

It's the day of the ball sports tournament! But just what the heck is this "taspony" sport we're playing? And why is it that nobody I ask about it knows, either?! It seems like even Toshika wasn't really able to talk to Yatogame about it... According to Yatogame, taspony is sort of like tennis, except you play it with your bare hands. Just what kind of sport is this, anyway?