Coach him
Truthfully, I'm still not confident with my tennis basics. I mean, how long has it been since Akane gifted me the racket? It has only been two weeks at most. And all I did for practice was to swing it a few hundred times in the morning plus a little more whenever I'd get some free time before resting at night.
Even after watching Fuyu's tennis matches during the Interhigh, I only managed to pick up a few pointers from there. I must say, that match between Fuyu and Michiru-senpai was the highest level I've seen if I don't count the recorded matches or clips I've seen of pro tennis players.
Am I going to be crushed by her service aces tomorrow? Most likely...
In any case, I never considered backing out of it. I promised them, after all.
Even if it's just to encourage Akane to pick up a hobby she can enjoy apart from being my in-training housewife, I will gladly become her stepping stone.