Expression turning baffled at the assertion that these are donuts, he stares first at Proto, then down at the donuts. "You're serious? Those are donuts?" He points a finger down at it, then pokes a donut hole.

"Weird. Never seen donuts like these before. Donuts are supposed to have a cream, fruit or chocolate filling." Yep, he's only used to good old Berliner style donuts. The ones Aoba's grandma made were a little more round than an unfilled one, but similar enough. His fingers grab the donut hole and he pops it into his mouth to chew absently.