Of all things, this is what has Koby sitting up a little straighter and frowning deeply in confusion. "You -- don't have ducks where you're from? They're a kind of bird." Vague hand gestures. "Small, fluffy, usually cute. Alvida likes cute." The name makes him twitch, reflexively, even still.

Biotics aren't magic, then, or not a type of magic you can learn. "It's something you're born being? Not like a Devil Fruit, then -- those are fruits that give you abilities if you eat them. Like turning into rubber or controlling fire or something like that." Among other really weird, out-there abilities. "They're really powerful, but if you eat one, you become incredibly weakened by sea water." Not a good thing in a world that's nearly 100% ocean.