Tomoya Taki (Taki Tomoya) sometimes spelled as Tomoya Takii is the head coach for Bijōdaisayama. He used to be the manager for the team. He is assisted by Roka who is also a coach and does all the cooking.
Roka mentions him in the first episode of season 2 and is first seen in episode 6.
Taki later wakes up Roka while he's having a nightmare, but since it looked like Taki was trying to grab his face, Roka reacted by putting him into an arm lock. They then discussed a couple of their players: Takeshi and Naomasa.
Taki is apparently 20 years old.