Vampire Housekeeper Slash Babysitter

Vincente Morgado is a 23 year-old-man, hired by Tougo Sakamaki (aka Karlheinz) to be the housekeeper of the Sakamaki mansion and his kids' babysitter. He and his 17-year-old sister moved to the mansion and find themselves trapped with a bunch of blood-sucking "leeches". He is able to protect his sister, but he is at the mercy of those he is hired to babysit. Well... Shit.