Do it as a ransom against god. Unless the other gods are going to stop you, threaten her that you will fuck up the world, or send you back home. If it just inconveniences her, who cares, shes a fucking kidnapper. Don't let her boobs sway you. Don't be a cowardly japanese guy, go on a murder spree against the kingdom, unless other gods or she's going to stop you.
I don't really want another cowardly japanese MC that has OP powers to do something but doesn't. Or another rapist harem protagonist. I don't care about their circumstances. I don't need character development from one off mob characters.