This story has potential. The protagonist looks like a 1000-year-old virgin when he finds himself being used by a beautiful girl, but it is acceptable, since she is the only one counting him with the supernatural world.
If you realize that everything he experiences is new to him, then you will not hate this story: Remember that he was gaining little and was only eating, sleeping, and working for your all life.
Usually all MC cares about their life first and then their shortcomings. The MC took a while to realize his shortcomings, but he quickly corrects them.
The novel's progress is also acceptable.
