In a non-despair AU Kaito and Maki treat Shuichi like a little brother here are some examples.
Miu doing something "werid" they will cover his eyes.
Someone hurts Shuichi they beat the shit out of them.
He's on a date Kaito forces Maki to spy on it.
Another headcannon is that at any shooting game Maki is a god at.
She will get a whole crowd cheering her on with ease.
Okay that's it bye