yeah, using dance as a martial art is weirder & less realistic than throwing fireballs from your hands, breathing fire, having stretchy limbs, levitating, teleporting, being able to electrocute people... and that's just characters in this game. unlike all those things, dance-based martial arts actually exist in the real world - capoeira, kalaripayattu & escrima for example - so manon's style of ballet-inspired mma is well within the realms of possibility