There existed no natural born females in the demon race. Even Lilith, had been created from the first human female. Over the eras demons had been adding them to their ranks through deals, Sabbath and seduction... Covenants are delicate. Not all females survive. Or stay sane. Success reflects the demon's skill. Where would we be if the Phantomhive's butler couldn't do that much?

During a period of grief, Rin returns temporarily to Sesshomaru's side to soothe her sorrow and catch a glimpse of what a life among demons would be like. She discovers that her lord's existence is not endless patrols anymore. Prosperous leader, she soon finds herself entangled in tales of conquests and mysteries, intrigue and seduction. S/R

This is my take on how Jo finds out about Henry's immortality and where they go from there. I am a huge shipper of Jenry so this is going to be Jenry centric sometime after Jo finds out the truth :D Enjoy! Rated M for future chapters