Katsutoshi Nakazawa (中澤 勝利, Nakazawa Katsutoshi) is the coach of Seiseki's soccer club.
Nakazawa is good at realizing player's potential, especially with Hisahito Mizuki, Tsukushi Tsukamoto and Jin Kazama, where he is not afraid to make unpopular decisions from keeping Mizuki on the bench to forcing Kazama to make Kaoru Indou, even when he knew Jin is unable to compete at his level.
- Special Skills: Playing daruma otoshi
- Likes: Body warmth
- Dislikes: Housework
- Favorite phrase: "Marriage is the lack of judgment, divorce is the lack of patience, and remarriage is the lack of memory."
- The name Katsutoshi means "victory" (勝) (katsu) and "benefit, advantage" (利) (toshi).
- Katsutoshi's surname Nakazawa means "middle" (中) (naka) and "marsh" (澤) (sawa/zawa).