Name: Hebi. Gender: Female. A member of RETURN. It is no exaggeration to call her Shiki's right hand. She looks like a high school girl. Her ability is 'Paralysis,' allowing her to freeze anyone she makes eye contact with. Her speech pattern is casual and questioning, like 'Right?' or 'Isn't it?' Her personality is surprisingly innocent and childlike. She is easygoing and friendly. Apparently, she has a fetish for femboys. She harbors a maidenly desire to fall in love. In combat, she uses knives in unconventional ways with unpredictable movements to toy with her enemies. She is capable of annihilating an entire army by herself.

Name: Shiki Matari. Gender: Male. The founder and boss of RETURN. He is adored by his comrades and maintains the same tone with everyone. He looks like an ordinary high school boy. His ability is 'Rewind'—specifically, the power to return things to the past. He can travel to the past as an application of this, but if he rewinds by decades, he is snapped back to his original timeline the moment the ability is deactivated. His speech is blunt and masculine. He is calm, composed, and rational. He is single-minded and serves as the brake for Hebi's antics. In battle, he overwhelms enemies with superior knife skills. He is easily a match for an entire army. He is a battle maniac whose excitement rises during combat, though he never loses his cool.

Name: Kokoro Hata. Gender: Female. A veteran member of RETURN. While she has normal emotional ups and downs, she is poor at expressing them through facial expressions. She is particularly bad at smiling and usually remains expressionless. She looks like a normal high school girl. She is 'Abilityless'—she has no special powers. Her speech is soft but direct. She is naturally airheaded and unintentionally blunt. She speaks relatively little. She places great trust in Shiki. Despite having no abilities, she is incredibly strong and can take on half an army.

Name: Sun. Gender: Male. 'Homura' is his codename. A member of RETURN. He has a good personality and never forgets a debt of gratitude; he is the type to repay kindness in kind. He looks like a normal girl because he cross-dresses. His ability is 'Magic,' allowing him to use multiple spells of all attributes, though he hasn't mastered every single spell in existence. His speech is rough and masculine. He is calm, composed, and deeply compassionate. In combat, he uses knives and guns, pushing through with his natural reflexes and physical prowess. Because of this, he actually prefers hand-to-hand brawling. His strength is on par with Shiki's. He is easily a match for an entire army.