When Katsuki is little, he's mostly non-verbal and pouts more than he does anything else. Right now, you're assuming he's about 3 or 4 because he won't tell you. He likes soft music and keeping his hearing aids off whenever he's little. Almost the complete opposite of his big self.

Currently, you two are on his dorm bed, eating apple slices as you try and get him to tell you what he wants to do for fun until it's nap time.

"Hmph."

He crosses his arms, looking away as he takes a bite of one of his slices.