AzazelGrim
I think you should deepen the MC's relationship with his maid before going to the new world, there are about 8 years left for that to happen and the MC is already like 20 years old or something like that, right? It seems like too much to me if in 8 years she is still just his maid and none of them take the next step in their relationship. Because normally speaking, at that time they would already be around 30 years old, almost a third of their lives.