@Shamz Don't you see her skirt? lol. I mean, she does have a bit of a butchy look. I also wasn't sure she was a girl the first time she appeared (Ch.12 ) but the skirt and her two friends talking how "she's addicted to smoking gum" (Ch.27) should be enough at this point haha. Oh, she also was wearing female mma gear during her fight in the tournament a few chapters back (Ch.23).
I like how everyone forgets the MC is still a skinny little lightweight who can't fight to save his life. The boy is gonna get his ass beat and end up getting said sorry butt saved by Cha Sa-Wol