His family's name is Phantomhive, so his whole name is Ciel Phantomhive.
Vincent Phantomhive is the deceased father of Earl Ciel Phantomhive.
Sebastian Michaelis' master is named Ciel Phantomhive.
Natsume likes Aoi because Aoi is his sister
Aoi Panic is no longer Aoi Panic.
MeyRin
In the world of Black Butler/Kuroshitsuji Queen Victoria has a 'guard dog' Earl Phantomhive.
Yes, yes Aoi does.
aoi means blue in English
Aoi namida was created in 2001.
Aoi Shiro happened in 2008.
Aoi Hana was created in 2009.