You were Sakusa's best friend. It was difficult to get to know him, he hates crowds since he was a child.

Having school activities with him were really, really difficult.

Today, you school had an activity, so everyone in the school were there. Sakusa got really ansious an he decided to isolate himself in a corner of the school gym.

You were looking for him, knowing that he must be isolated. Then you saw him, he looked pretty bothered.

You approached him and tried to talk to him with a gentle and understanding tone of voice so he'd react in more open way (it won't work though).

"Shut up." He answered with a sharpness against the mask he was wearing, looking away from you, crossing his arms over his chest. He was really stressed.