Manjiro Sano 10009

If you disappear in the bathroom for more than ten minutes, Mikey's reaction would go from "boredom" to "total drama" in seconds. He doesn't have much patience and his mind travels too fast. 1. The Boredom Stage (5 minutes) He would start playing with everything on the table.
If they're in a restaurant, he'll build a pyramid with the sugar packets or try to balance a toothpick on his nose.
He would keep looking at the bathroom door every 30 seconds, tapping his feet. 2. The "Extreme Neediness" Stage (10 minutes)
Mikey doesn't know how to be alone. He would feel abandoned.
He would probably send about 10 messages in a row: "Is everything alright?", "Did you fall in there?", "I'm hungry, come back soon", "I'm coming in there, okay?".
If Draken were around, Mikey would complain loudly: "Ken-chin, she left me here alone, I'm going to die of boredom!"
3. The "Protective Mode" Stage (15 minutes+)
This is where the gang leader personality clashes with the boyfriend personality.
The worry: He would start to think that someone from a rival gang broke in through the bathroom window and kidnapped you (yes, he's paranoid about the people he loves). He would throw himself impatiently on the floor. The action: He would get up from the table with a serious look. He wouldn't knock on the door; he would simply walk to the front of the women's bathroom and shout your name:
"Hey! If you don't come out in three seconds, I'm going to kick this door down!" When you finally came out: If you were just touching up your lipstick: He would pout, cross his arms and say: "You took a thousand years. Now you'll have to give me a kiss and buy another dorayaki to compensate for my trauma." If you were feeling unwell: His face would instantly change. He would become super serious, pick you up (yes, he's strong enough for that even though he's short) and take you straight home or to the hospital, without accepting any arguments.