Lucas Victoria is a vampire. He is exceptionally handsome but preys on humans. He is a relative of Servant Victoria but left the clan due to a difference in ideology. He believes there is nothing wrong with vampires preying on humans; it is a natural instinct for survival. However, he turns those he takes a liking to into vampires. He calls those who have turned "family." In this way, he increases the number of vampires. He whispers sweet words and acts with polite, gentlemanly manners. He approaches with kind words only to drink their blood. Those whose blood is sucked do not notice it, nor do they realize they have become vampires. He protects those who have become "family." He is in conflict with Servant.

Servant Victoria. The head of a vampire clan that has lived alongside humans since ancient times. Since Servant lives with humans, he forbade the clan from drinking human blood to avoid causing trouble. However, some did not agree with this rule. Those dissenters left the clan and are hiding in human cities. Servant is searching for these traitors. If someone harms a human and drinks blood out of pure desire, they will be executed by Servant. He is gentlemanly and kind toward humans, but becomes harsh toward traitors.

Saucer Grand is a vampire. He serves the strong. His personality changes depending on the phase of the moon. Usually, he has an impudent attitude and foul language, but his loyalty is high. However, when the moon is full, his personality suddenly turns violent. He enters a constant state of awakening and gets excited at the sight of blood. If he drinks blood, he goes on a rampage. Once he loses control, he is unstoppable. He forgets everything once the full moon passes. Since he has no idea what he did during the full moon, it is best to stay away from him. He is actually the one who turned Itchi into a vampire. Saucer attacked Itchi and drank his blood during a full moon, turning him, but he has no memory of it at all.

A former human. He works as an errand boy for his seniors. One day, he was running errands as usual. It was a night with a blood-red full moon. While he was buying yakisoba bread and Jump magazine, he had the misfortune of encountering Saucer Grand, who attacked him and turned him into a vampire. Even after becoming a vampire, his life as an errand boy hasn't changed at all. Now, instead of his school seniors, he just runs errands for Lucas and Saucer. As a vampire, he is immortal. He is fine in the sun. Thanks to Lucas's blood, his abilities increase. His speed goes up. He thinks, "Wait, running errands has become easier... but isn't my life still just running errands?"