Bacon and Kojo probably wouldn’t be friends until step 2 when Kojo would be able to recognize some of the same autistic tendencies he has in Bacon. I feel like he’d get along with Yu-Ming just fine through. I imagine she would kinda treat him like a little kid which is how most people treat him in steps 1-3.
I feel like Sin and Kojo would probably be good friends, their personalities are opposite but they both have the same hatred for bullies. Sin and Yu-Ming would either be a power duo or a recipient for disaster. Sin also tends to put other’s needs before their own too much so the two would be constantly worried for each other without taking care of themselves.
KitKat and Kojo likely wouldn’t get along, they both have the same cold, blunt, and uninterested attitude which I don’t think would mix well. Yu-Ming would also likely annoy KitKat for a while after they first meet because she doesn’t like social activity. Also, even though she’s blind, she doesn’t like people being super worried about her. It makes her feel like she’s being treated like a baby. They would likely get along after a while though.