Is It Wrong to get Love in the Dungeon?

This is story about a youth that got called because God need help. Yes, 20 years old virgin, orphan, no achievement in life still got favor from God to help him for something. 3 wishes? sure, maybe I can get more along the way by blackmailing Him. This is my first fan-fiction, also English is not my native language so don't expect good grammar. Disclaimer : I don't own any of the character from anime and manga, also some story from the original. The cover too