Karin Koizumi Eyeshield 21(Crimson Style)

Karin Koizumi from Eyeshield 21 in Crimson Style.

The second Eyeshield 21 character drawn by Crimson Sensei, appearing in J-Girl Train 3.
A small note: she has the same issue as Bianca — her braid tends to be generated in front instead of in the back.