This is South Korean cosplayer Hyun-ah Cho. That's not her cosplayer name. Oh, no. Her cosplayer name is "Wolf".
The Seoul resident tackles a wide variety of games and anime with her cosplay. Though, she sure seems to like fighting game Guilty Gear. There's a lot of Guilty Gear!
When not cosplaying Wolf says her hobby is sleeping. Guess that means cosplay isn't a hobby for her? Judging by her photos, I'd wager a "no".