Arcade Sona from League of Legends.
Reference: Michelle Hoefener [link]
©Art by me
© Sona is a original character from League Of Legends.
edit: I put Michelle's reference in here because someone though I overlaped the drawings, well I didn't. I agree it is almost the same drawing, but I took 2 days to make it(of course that I used her as reference). It was a sad coincidence, and I won't try to make this person think the opposite.