I'm trying to find a manga I have read before about a highschool kid who gets together with an adult business man. There is a seen where it shows that they got together when the kid offered him some gum. The business man thought he was propositioning him and asked him how much to get rid of his boredom. The kid gets angry and punches him fracturing his hand. The business man then finds him again and as an apology helps him until his hand is healed.

Hidoi Otoko.?

Thats it Thank You!!