Gankutsuou (2004)
Original title: 巌窟王
Gankutsuou is a 2004 Japanese-language animation series. It stars Jun Fukuyama, Jouji Nakata and Daisuke Hirakawa.
In an elegant future Paris, a Count returns to wreak havoc on those that betrayed him.
Where to watch Gankutsuou
Stream: Crunchyroll Premium, Crunchyroll Premium (Via Prime) Amazon Channel