Mizu straightens at the voice that appears in her head. The tone no distraction from the fact it appears in her head and raises the question of reading her thoughts or other information about her. Since the person she addressed reacted to her, Mizu assumes they're the one behind it. She eyes them, not seeing any obvious means of flight, and shrugs.

"If you need the advantage of using the form you're familiar with, go ahead. I'll still win." All the more because of speaking in her mind. It doesn't matter she cannot fly in her natural form, nor has wings in this place usually. She'll win.