I read a story about a year ago about a guy who woke up in a new world in a cave. He was a demon lord(??) and heros were sent to defeat him but instead he convienced them to join his side and fight with him. I remember a scene with the hero following the demon lord to the local village and being confused because the town folk love him. The demon lord also had a female servant who he had sex with and the hero being scared that she'd be forced to have sex with the demon lord. I don't remember much else >.< Ive tried searching for it but cant seem to find it. Any help would be greatly appreciated!! orz

I can think about a couple of titles that fits a little bit with your description, but I'm not shure if it is what you are searching for.

First is: Maou no Hajimekata [http://www.mangaupdates.com/series.html?id=120125] for the manga; and [http://www.mangaupdates.com/series.html?id=123119] for the novel.

And the second is: World Customize Creator [http://www.mangaupdates.com/series.html?id=105581] for the manga; and [http://www.mangaupdates.com/series.html?id=122244] for the novel.

I hope that either one of this is what you are searching for, good luck.

Yes! Thank you so much!! It was Maou no Hajimekata! I've beeb wanting to reread this for days and now I can!

I've also read World Customize Creator and I really enjoy that too! Honestly I just need to stop reading so many novels/mangas that have the same plot XD