He is a first year Karasuno player and plays as setter. He enter to the club with a special technique for volleyball. He is Shoyo's rival and he is known as the King of the Track, only overcome by Oikawa, his senior. Kageyama is the only one who can play in perfect sincrony with Hinata, using their special attack, "quick freak attack". He is very serious and calm. Tobio use the number 9.