NP. Curiosity got the best of me so I did a little more digging, though kinda generic or male so I guess crossplay if you're ok with it
A girl centaur from yu-gi-oh card game:
http://images2.wikia.nocookie.net/__...P-Anime-5D.png
Guild Wars has Centaurs as NPCs/Enemies (All male I think)
Centaurumon from Digimon
Centaurs exist in the WarCraft world so might be in the manga. WoW pic of male and female Centaurs:
http://images.wikia.com/wowwiki/images/b/bc/Centaur.png