Tokisaki Kurumi

The third Spirit that appears in the series, and the most brutal. Her Astral Dress, Elohim, is made out of crimson and black frills, giving her the appearance of a Gothic Lolita. While in her Astral Dress, she wears her black hair in twin ponytails, with the hair on her left side longer than her right. While not in her Astral Dress, her hair is tied up slightly differently, with both sides being of the same length and her fringe covering her left eye, showing only her red right eye. Her left eye is an inorganic clock face, representing her life. Although she is prone to killing people without a second thought, she has so far only targeted humans as she cares for animals a lot, such as when she killed four guys who were abusing a cat. She transfers into Shido's class in volume 3. She is attracted to Shido from the very start, gaining the ire of Tohka and Origami. She is very aggressive in her actions, causing Shido to be bewildered during his mission on making her fall in love with him. However all this is an act as she reveals to Shido that she transferred to Raizen High School in order to eat him, or specifically the power that he has within him, to gain a large amount of life. She has a history with Mana, as Mana has been repeatedly killing Kurumi, but fails due to the fact that Kurumi keeps reappearing. She manages to easily defeat the combined forces of Tohka, Origami and Mana at the end of volume 3, but was defeated at the beginning of volume 4 by Kotori. She managed to flee after Shido got in between them to stop Kotori from killing her. In the volume's epilogue she is seen regaining her life using her shadow powers.

She reappears at the end of volume 6 to help Shido rescue Tohka who has been captured by DEM Industries, as well as to use Shido as a distraction to find something else in the possession of DEM Industries. It is revealed at the end of volume 7 that she had been looking for and had failed to find the Second Spirit, who was captured by DEM Industries and held somewhere, and was the only one who knew the location and identity of the First Spirit, the one that caused the spacequake 30 years ago. As of volume 7 her powers have yet to be sealed by Shido.

Her Angel is Zafkiel, which takes the form of a massive clock face with a rifle and a handgun of intricate designs taking the place of the minute and hour hands of the clock, and which allows her to control time. She is able to summon her past selves to fight or take her place as they are essentially Kurumi herself. This not only allows her to cheat death by summoning herself from before her death, but also makes it more difficult for Shido to reach her; even if Shido is able to persuade Kurumi, another self may come forth and kill her for weakness, circumventing any emotional persuasions the same way as physical injuries. The twelve Roman numerals on the clock has different powers that only the original Kurumi can use. She has twelve different abilities she can use, which are named after the first twelve Hebrew numerals. The abilities she has shown so far include First Bullet: Aleph (which speeds up time, allowing the target to move faster), Second Bullet: Bet (which slows down time and causes the target to move slower),Fourth Bullet: Dalet (which reverses time and which can undo injuries the target sustains), Seventh Bullet: Zayin (which stops time, freezing the target and preventing it from moving), Eighth Bullet: Het (which makes clones of the target, these clones being cloned from a past form of the target, and this ability being the secret behind her past selves and why she keeps reappearing after being killed), and Tenth Bullet: Yud (which allows her to see the past experiences of the target). Her power causes her life to be eaten away, the clock hands on her eye rapidly turning in the clockwise direction each time she uses Zafkiel's power. This forces her to obtain 'time' from outside sources, specifically from either killing other humans using her shadows, or using the City of Devouring Time to weaken those caught in her shadows to strengthen herself. In addition, the real reason she wants to gather a large amount of life is to not only be able to use Twelfth Bullet: Yud Bet to go back 30 years in time to kill the First Spirit, but also to have enough left over to do the deed. Her AST codename is Nightmare.