|Actor(s) / Actress(es)|
|Voice Actor(s) / Actress(es)|
|List of Characters|
Nanako Mizuki (水樹 ななこ, Mizuki Nanako) appears in the first episode at the very start of GTO series who is Eikichi Onizuka's next big challenge at Musashino.
She lured him into a trap in an attempt to try to get some money out of him (along with the 3 punks of Class O), but Onizuka didn't go down. At around the same time, she tried to reach out and get some help. With her family life deteriorating, she felt that Onizuka could fill that void.
Ultimately, Onizuka did something to help her out, demonstrating his abnormal strength by destroying a part of the wall that symbolized the distance she felt between her and her family. After that, she kind of fell in love with Onizuka, claiming that when he becomes the greatest teacher in Tokyo, she'll be waiting for him.
- Nanako's surname Mizuki means "water" (水) (mizu) and "tree" (樹) (ki).