Kuro from Kurokami. She boxes and I think that's awesome. I really like this series but I got turned off from the anime. I'll have to give it another shot one day but I felt they changed Keita way too much...Manga - jerk evolving to a nice dude, Anime- pot of emo....
I actually had an idea to draw something similar to this and had part of it done a few years ago. Pulling from that I expanded and finished it.
Kuro is (c) Dall-Young Lim and Sung-Woo Park