Sirius (シリウス) is a character that has yet to formally appear in any series. He is a vampire and Apricot's brother.
Sirius has short, blonde hair with three strands sticking up, bright red eyes, raceless skin, and pointy ears. He wears a black open suit over a white dress shirt with a black bow-tie and brown vest. He also wears a black cape which is red in the inside, black gloves, and black heeled shoes. He carries a cane and has a black top hat in a few of the artworks he has appeared in.
Sirius is depicted as somewhat smug in the drawings he has appeared in, but not much else is known about his personality.
Not much is known about his past.
- Obsolete Dream - He makes a brief appearance in the background of Chapter 3.
Kagari is Sirius' father.
Lilium is Sirius' mother.
Oniyuri is Sirius' step-mother.
Apricot is Sirius' sister.
Isara is Sirius' half-sister.
Fides is Sirius' uncle.
Koyomi is Sirius' aunt.
Luno is Sirius' cousin.
Iduberga is Sirius' cousin.
Hermione is Sirius' aunt.
Singetsu is Sirius' uncle.
Hersilia is Sirius' cousin.
Herlurga is Sirius' cousin.
It was revealed on a live stream that Hakua is an ex-girlfriend of Sirius. Due to him being loose with many girls, Hakua and many others have ended up hating him. 
It is unknown what relationship do they have. They appeared in an illustration together.
Kurumi is Sirius' pet, and he is seen treating her as such.
- His name is based on the name of the brightest star.
- He has appeared along with Kurumi in a Vampire x Human Girl anthology, "喉を潤し、心満たして ", that Deep-Sea Prisoner drew back in 2013.
There are currently no known quotes by Sirius.
Obsolete Dream Characters
|Major||Hanten · Kurotsuno · Maekami · Met · Sullivan|
|Minor||Anten · Bis · Chishibuki · Chlomaki · Glasses · Gyakuten · Reina · Shikabone|
|Cameo||Chikemuri · Giltz · Lobco · Mikazki · Shizk · Silone · Sirius|