[Super strength? Killing someone? This is all news to Ritsuka. And suddenly all he can think is I am so tired.]

Lots of people have weird powers here, and they use them a lot more than you do. I'm sure you wouldn't kill someone on purpose unless you had to, so... don't worry.

If it means so much to you, if you're not feeling better tomorrow and you have to go, I'll go with you.