The Mysterious Ring || Sebaciel

Ciel Phantomhive found a piece of the hope diamond. They said it was cursed but it was not only cursed, but it was magical. It can change the wearer to anything they want, but not everyone can use it, it chooses the most worthy and that person was Ciel.

Queen Victoria found out that Ciel has the ring, and made him her watchdog and/or assassin.

The prince of Kuro, Sebastian Michaelis, was hosting a ball for his 20th birthday and everyone was invited, even people from the other Kingdom. That day he meets the love of his life but will he be okay with that big secret.