This is not Ciel's VA its someone else that sounded like him. and this song is fan made and yes, Ciel doesnt actually have a theme song.

Bleep Bloop

karneval (anime)

The songs do not belong to me, such as trademarks, rights and everything that is connected. They belong to their legitimate owners

マドモ★アゼル/PENTACLE★（斉藤壮馬・羽多野渉・近藤隆・木村昴・平川大輔）

Diabolik Lovers More Blood [Opening Full] - Kindan no 666

Only my favorite anime song in the world from one of my favorite animes in the world
You can also purchase the manga on Google Play Books

the original song of Kuroshitsuji

Need 50 likes or more to available the download button!! 

Exsistensial Crisis in progress. Go away and never come back. *curls up and thinks about life*