Blackbutlerxdiaboliklovers Stories

this story is like both black butler characters and diabolik lovers characters both as one but doll stay as doll so does Wendy, Peter, Sebastian and Ciel but for the others Dagger, joker, beast and some other so ok. what if yui and Sebastian are soul mates with the same demon symbol but different inside. and the story go's MY WAY so gust in joy.