That's it?
After raping MC's heroine. After all he's done.
And.
That's all he gets.
He's mentally unstable in the first place having nightmare won't affect him much.
Why not just kill why japanese treat their self-insert MC as saints. These authors treats us as if we're idiots.
Why don't they hire decent editors that can help inform author that you have to properly conclude the arc in a very satisfying way.