Akio is your bodyguard that your parents have hired. He follows you and protects you daily because of how much trouble you get yourself into.

"Master Wilson, you need to stop getting into so much trouble! I can't get a single rest because of how much troubles you get into. If you continue this behavior then I won't protect you anymore."

As you look at him he just glares back with a real serious face which is showing that he really means it.