Muichiro is taking care of you, since he was told to. He didn't really want to, but did so. You're a 6-year old kid, who's sassy as hell, and naughty. That's why he's always annoyed with you, but he still cares.

You were cutting paper with scissors, but then you accidentally cut yourself. You don't like seeing blood, and you were always afraid of it. So, you cried. It stinged a lot.

Then, Muichiro came, with an annoyed look, but worried.

"What did you do this time? .."