Mahiru Shirota firmly believes that simple is best and troublesome things should be avoided at all costs. It is troublesome to do nothing and regret it later—and this ideology has led the 15-year-old to pick up a stray cat on his way home from school. As he affectionately names the feline Kuro, little does he know that this chance meeting will spark an extraordinary change in his everyday life.
One day, Mahiru returns home to find something quite strange: a mysterious young man he has never seen before. His subsequent panic results in the uninvited guest being exposed to sunlight and—much to Mahiru's shock—transforming into Kuro! Upon revealing himself as a mere lazy shut-in vampire, Kuro promises to leave once night falls. However, one disaster after another leads to Mahiru accidentally forming a contract with his new freeloader, dragging him into a life-threatening battle of supernatural servants and bloodthirsty beings that is anything but simple.
[Written by MAL Rewrite]+ More
More Seasons
Characters & Voice Actors

Kuro
Main
Arisuin, Mikuni
Supporting
Arisuin, Misono
Supporting
Belkia
Supporting
Doubt Doubt
Supporting
Doudou
Supporting
Guildenstern
Supporting
Higan
Supporting
Hugh the Dark Algernon III
SupportingRecommended for you
Gangsta.
Special
23m
Majestic Prince Episode 25 – Wings to the Future
Special
23m
Tokyo Pig
TV
23m
Akane Iro ni Somaru Saka Hardcore OVA
Special
26m
Anime-Gataris
TV
23m
Comic Party Specials
Special
7m
[RAW] Dokonjou Gaeru
TV
25m
Neighborhood Story The Movie
Movie
30m
Panty & Stocking in Sanitarybox
Special
8m
Ace Attorney
TV
24m
Maken-Ki!
TV
25m
Phantom in the Twilight
TV
23m