Krul Tepes

The queen who rules the vampire city of Sanguinem. She is also the Third Progenitor and possesses extraordinary power. Four years ago, she gave her own blood to the mortally wounded Mikaela after his battle with Ferid, reviving him as a vampire. She is Mikaela's savior, master, and a parental figure. She is the younger sister of Ashera (Ashuramaru). She is accompanied by a creature called Arcane, rumored to be a restraint given by the First Progenitor.

She cherishes Mikaela above all else and has been giving him her blood for four years. Her favoritism towards him is evident even to other vampires, granting him privileges such as attending the noble council and receiving armaments reserved only for nobles. She also cares deeply for Yuuichirou, calling him "Yuu" and supporting Mikaela in his efforts to save Yuuichirou.

For some purpose, she has secretly engaged in the research of the "Seraph of the End" without the knowledge of the higher-ranking progenitors, and she secretly collected the orphans from the Hyakuya Orphanage, falsely claiming they were killed for this purpose.

She has been searching for her brother Ashera, who disappeared with the First Progenitor over a thousand years ago. Before the world collapsed, she made a deal with Mahiru, who used Ashera as material, and turned Mahiru into a vampire.

During the chaos of the "Seraph of the End" experiment at Nagoya Airport, she was betrayed by Ferid and treated as a traitor. She ordered Mikaela to escape with Yuuichirou. After returning to the city, she was reported to the higher-ups by Ferid for her betrayal, and during this time, the city was occupied by the Imperial Demon Army.

Later, she was moved to Ferid's mansion in Osaka, where she was restrained and reunited with Lest Karr. During an attack by Urd, who had sensed Lest's presence, she managed to break free during their battle. However, after Lest left, she and Ferid were sentenced to "sunlight torture" by Urd, carried out by Luc. A few days later, a rescue mission by Yuu and his group failed, and she was transferred to Sanguinem by Luc.

After the transfer, she denied being a traitor to Urd and pointed out the current situation where humans could no longer be controlled due to the rules made by the First Progenitor. When Urd asked for her cooperation based on Luc's advice and proposal, she agreed to cooperate if Urd had the courage to break the taboos, promising to reveal what the First Progenitor did to her and her brother.

She comes from a noble family of the Dark Ages, but after her mother was killed by the commoners who held a grudge against the nobles, she was captured and sold to different slave traders, separated from Ashera.