Scarlet rain (black butler)

Note: Dont read this if you havent watched s1 and s2 of Black butler!

After Ciel had turned into a demon, Grells sister, Scarlet has returned to the shinigami dispatch. After a long mission of capturing a soul. And meets again his dear brother. As she comes back she meets a little fellow demon whom she always heard from her brother. Whos name is ciel. Love is forbidden for the demon and shinigamis. But could Ciel and scarlet reverse that?