The year was the 19th century. Y/n was a governess, a butler, a maid. She was everything her masters wanted. Alice and Alex Seymour were the only ones who could control her. The Seymour family knows Phantomhives, Vincent knows the twin's parents as friends, accepting them to aristocrats of evil. But it wasn't until Ceil's and twin's parents died that they became distant. Twins changed, now too cruel towards their enemies, to anyone who could speak bad mouth them. Just like Ciel Phantomhive, they worked for the Queen, they even let the Queen call them “Vengeful Serpents.” They were Queen's ears and Y/n were twins' ears.
Congratulations! You called SDN and now you are working with them after what happened with your powers! And plus side? Man across your desk is smoking hot with "fuck my life" attitude.