[Kaguya no, please tell his dumb ass he's wrong... But since she doesn't he just assumes he's RIGHT because of course he is! The law of finders-keepers always prevails.]

Uh... [The law of "can swords swim?? We just don't know!" is a little less helpful.]

I haven't been in water like this before... Like, where my feet don't touch the ground, y'know? But I think I could probably do it.

[A strong vote of confidence.]