Not much is known about Tezuka's personality, but he appeared to be a nice guy, judging by his kindness towards Aya.
Tezuka's appearance is never shown.
Not much is known about him, aside from the fact that he is studying in the same cooking class as Aya.
Act 3: The Hopper
After Aya gets scolded by her teacher, Rei Kusunoki, Natsuko and Tezuka come over to cheer Aya up, saying that Rei shouldn't act so stuck up. Then, they discuss the possibility of Rei's flavor ideas being stolen from Tosuke Kigawa, noticing that the taste of her cake is simllar to the missing man's ice cream.