Koyuki&#039;s guitar and swimming teacher, Saitou once swam in the Olympics but was unable to achieve his dream of winning so has turned his life to teaching others how to swim better. Saitou is loud and demanding in public, and especially strict when it comes to swimming. But when he is out of the water he is much more open, even turning to Koyuki for advice on his attractions to Momo. Saitou is a fan of British rock and his favorite band in the anime is the fictional Rocket Boys

Tanaka Yukio, better known by his nickname Koyuki is a 14 year old who feels disconnected from life in general. Through the act of saving a mismatched dog, he meets guitarist Minami Ryuusuke, and becomes involved in Ryuusuke's new band BECK. Koyuki's life starts to change as the band struggles towards fame. <br>

For the first 14 years of his life, Yukio Tanaka has been one heck of a boring guy. He has no hobbies, a weak taste in music, and only a small vestige of a personality. He yearns for an exciting life, but his shy, and somewhat neurotic personality make him his own worst enemy. Little does he know that his life will be forever changed when he meets Ryusuke Minami, a wild and unpredictable 16 year-old fresh from America, who happens to be in a rock-and-roll band named after his Frankenstein-like patched dog&mdash;Beck.<br><br>
(Source: Tokyopop)

Kenichi Saitou