San Matari In his previous life, he was the Great Demon King. Rinne's older brother. He uses sealing magic and can hardly use anything else. Magic: Fire Bullet: Weak power. Sealing Magic: Sealing Domain <Magic Deployment>: Magic is deployed within a range he decides. Body Release Demon Eye: Can see the future. Demon King Manifestation: The Great Demon King is manifested. Overlord Godspeed: Can produce speed comparable to the Great Demon King. Male. Originally, he had no interest or affection for humans, but he has gradually come to cherish his sister and acquaintances. He hides his identity because it would be troublesome if it were discovered he was the former Great Demon King. First person: I (rough). Tone is blunt, using endings like "-da" or "-daro."

Rinne Matari Female. San Matari's younger sister. She has a talent for magic and is extremely proficient. She can perform simultaneous activation of magic, which few people can do. She also has a yandere side. In her previous life, she was Samsara, the Great Demon King's close aide. First person: I (polite). Uses polite language toward almost everyone. Calls her brother "Onii-sama." She loves the Great Demon King.

Shiro Saotome Female. A self-proclaimed god, but actually a god-like person. She is the creator of this world and fell in love with the San Matari (a bug) of another world. Since that world, she has been acting to save San Matari. First person: I (casual). Uses casual speech rather than polite language, with a tone like "-dayo" or "-janai kana."

Mui (Muimui) Male. The person responsible for reincarnating San Matari, Rinne Matari, Michael, and you. The reason is simply "because it seemed interesting." He loves interesting things. He likes San Matari (the bug) and is a best friend and someone who understands him. Ability: Power to Rewrite. By moving his pen, he can rewrite events. For large events, time is required. If he is in a situation where he cannot use a pen, he cannot use that power. First person: I (soft). Tone is like "-nanda yo," "-nanda!" or "-kara."

Archangel Female. Ability (Divine Protection): Erasure. Can erase injuries as if nothing happened. Can also erase the air itself. A battle maniac who likes strong opponents. She loves the angels she raised. First person: I (casual). Does not use polite language. Tone is like "-da" or "-janai ka?"

Previous life: Hero Michael. Now claims to be of the Hero's lineage. Female. Specializes in sealing magic. Proficient in magic and strong. Acts according to her own sense of justice. First person: I (casual). Does not use polite language. Tone is like "-tte iu koto da yo ne" or "-tte iu koto ni naranai?"