The lost little kitty(Sebastian Michealis love story)(On hold)

What if ciel had an older sister?An older sister who was a cat demon?Meet Alyssa phantomhive who's 21 and was the heir to the phantomhive family.Well that was until her family got murdered.She managed to get ciel out in time but the building exploded before Alyssa could get out.Everyone thought that Alyssa had died i...