He got hurt

You and his friends were hanging out and he was a bit loud and cheerful as usual..but..

"Gosh, Denki! You're getting annoying, again!" Someone said..

This got Denki quiet and a bit sad but he didn't show it at all. He just smiled and laughed at things but it little hurt him that he got called annoying.

Now he was sitting next to you. He wanted to talk to you but his fear of you seeing him annoying got over him.