Wow! i expect him not to save that douche. Whatever. The stupid MC chose to live like a fairy tale hero with external power he borrowed from someone else. Instead of being more rational.
I hope at least that douche would be punished for getting others killed, it's justice time, at least the MC wouldn't have saved him in vain.
Also, these days people are quick to judge it black and white. Now we're all edgelords for wanting the MC to leave that a-hole to death. There's no middleground, it seems. If that would make you feel more enlightened.