I think it's just a made up character. Just an independently made picture done in the 아니메 style.
posted over a year ago
I don't think its Winry because #1 I don't think it really looks like her; 2# she could not preform alchemy; 3# a transmutation 원, 동그라미 doesn't look like that; 4# that doesn't explain the 초 circle; 5# transmutation circles are only made on solid objects, not in the air; 6# this type of theme for a pic (magical 원, 동그라미 in the air) is 인기 for independently done 아니메 style art