Reiji Sakamaki
Reiji is the 2nd son in the family.
He is a very strict type. Reiji is the one who takes care of the household and of all his younger brothers while Shuu, who is the one supposed to be doing this, slacks off. Because of Shuu’s lazy behaviour, Reiji hates him and is jealous of his position of eldest son of the family as Shuu gets all the attention. Even though he’s usually gentle, he insults Yui terribly, yet he’s also a sadist vampire.
Reiji hired a vampire hunter to kill his mother and show her that he was better than Shuu. Due to the jealousy towards Shuu he also did set on fire an entire village, only to kill Shuu’s human friend, Edgar. Shuu is still unaware of this though. Reiji has a collection of poisons and is experimenting a drug to bring his mom back to life (just to kill her again).