Asriel Dreemurr

[This, Mettaton knows about.

This...he still doesn't know how to fully deal with, but he does know that when he's upset, he wants to be supported. So without any hesitation, he wraps his arms around Asriel, the joints in them creaking and jerky, but ultimately he's successful.]

He threatened your life, Asriel. You cannot be expected to do anything but fight back. You succeeded in protecting yourself from danger and eliminating a grievous threat.

You shouldn't have stopped. Whether you meant to or not, you were protecting yourself. And that is never wrong. Do you understand this?

You are not wrong for what you did.