I can try not to explain things, but it's second nature, just tell me to shut up.

[ He waved his hand dismissively, he wouldn't take offense to that. He also looks pleased and amused that he made not the worst impression on the train. That's a small victory. ]

Oh, yeah right, social conventions, all that.

[ He bows a little, it's less formal looking, but he means well all the same. ] Ishigami Senku. Senku is fine, everyone calls me that.