I'm reserving my final judgement here. If MC helps her fast, then he's a good guy. If he takes his sweet time and waits for her to be trashed/killed first, so that he can have another glorious entrance and kill the enemy in a flashy way so that everyone can see how great he is, and have her or her daughter added to the harem, again, then to the trash it goes.
I'm still kinda annoyed with the whole three legged crow thing. It feels like everything MC does, he does it with the purpose of showing off. Not saying that you can't have all the powers, because otherwise I'd have dropped this from day one, but you'd expect at least a minimum of pragmatism from someone whose greatest qualification was that he 'went to college'.