Nao Serizawa

Nao Serizawa (芹沢 尚 Serizawa Nao) was the third year junior high student who debuted in the second volume of the light novel High☆Speed! written by Kōji Ōji. He was a manager of the swimming club.

Appearance
He has long grey hair with bangs, yellowish-green eyes and is relatively tall and is usually shown with a kind smile on his face.

Personality
Nao is somewhat like Makoto, inferring to their kind nature and such. For one thing, they even share the same eyes(more droopy and kind-looking). Being somewhat like a mother to them, he has a gentle and soothing personality. Nao is also extremely empathetic, prior-known to understand what Asahi is going through when Asahi says to Nao that what Natsuya said about their relay. He also is a good listener, letting the person he's talking to spill out to him.

In Free! Take Your Marks, he wears glasses and his hair is more unkempt.

History
Nao Serizawa was a third year at Iwatobi Junior High School while Makoto and Haruka were freshmen. He was a manager of the swimming club and was responsible for giving guidance to the first years.

Plot
He was the one who coached Haru, Makoto, Ikuya and Asahi when they were first years in middle school.

In Free! Starting Days, he is shown to have gone through an eye surgery. In Free! Take Your Marks, Natsuya says it's due to an eye injury. He also says that he wishes he could swim with Nao again someday, but he can't since Nao isn't allowed to swim.