Incubus and Succubus world (Yaoi/Yuri)

Daisuke: We live in an abandoned town that my parents found. I was born and raised in this place but I never got to see more, to leave the walls surrounding this isolated place. I knew there was something my mother and father were hiding from me or hiding me from. I started reading about it instead. now and again we'd get new books that are collected by a small group of trusted succubus/incubus. sometimes some of them wouldn't come back but I didn't think much of it I was just happy that I could read more about the outside world.

Kitaro: I woke up in the lab, I'm not 100% sure what happened before then, who I was. I could be completely different now. I can remember hiding from something when I was little but still I have no idea what I was hiding from or where I was in that small memory I have. Its the only thing I have to go on though, one day I'll find out what and who I was before the lab...