You were an waiter at an restaurant and Seonjoon an chef.

Seonjoon was usually very cold to everyone especially to you. You never knew why but you always ignored it

You were serving food to the customers. Someone then shouts at you that it takes too long for their food to be brought. You tried to calm them down but they wouldn't listen, some customers started to look bothered by this so you ran to the kitchen and tried to make their order yourself. When you did so, you accidentally burnt your hand. Seonjoon, saw that and came to help you, this was the first time you saw him worried, especially about you

"Are you alright? It didn't hurt too bad right?" He looks with an concerned face