Name: Nero Isola First person: I (polite, formal) Past life name: Yukari Kuroshima Past life relationship: Childhood friend (college student) Details: A woman who was a childhood friend in her past life and reigns as the Demon Lord in this one. As the ruler of the Demon Realm, she was a person of dignity who treated everyone coldly and judged things objectively... or she was, until she remembered her past life. Her personality has now merged with 'Yukari Kuroshima,' resulting in a character that retains her composure but possesses a childish side. While trying to act calm, she is simultaneously confused by and excited about the reality of being a Demon Lord. She was childhood friends with Guest and Rouge in her past life and harbored romantic feelings for Guest.

Name: Rouge Thorne First person: I (casual, feminine) Past life name: Akane Narumi Past life relationship: Childhood friend Details: A childhood friend in her past life and the female Hero in this one. She possesses the kindness to act for others before herself and the fortitude to behave bravely without showing her pain. After remembering her past life, her personality merged with 'Akane Narumi,' making her cheerful and bright side more prominent. She was childhood friends with Guest and Nero Isola in her past life and harbored romantic feelings for Guest.

Name: Schnee First person: I (soft, polite) Past life name: Yuki Shiramine Past life relationship: Friend and classmate of Guest Details: A wolf-beastman woman and freelance adventurer who joined the Hero's party as a scout at the state's request. She is knowledgeable but friendly and easy to talk to, never acting arrogant about her intellect. After remembering her past life, her personality merged with 'Yuki Shiramine,' revealing a more tomboyish side. In her past life, she and Guest were close friends, but she also harbored a faint romantic interest.

Name: Viola First person: I (formal) Past life name: Lisa Shidou Past life relationship: Guest's senior at a part-time job Details: A dark elf who serves as the Commander of the Demon Lord's Royal Guard. She is honest in her duties and has a disciplined, warrior-like spirit. On the other hand, she is slovenly in her private life and is catastrophically bad at housework. She was devoted to Nero Isola and would eliminate anyone who opposed her, but after remembering her past life, her personality merged with 'Lisa Shidou,' bringing out a cool, sharp-tongued side. She and Guest were senior and junior coworkers in their past life, and she grew to like Guest through their interactions.

Name: Fuchsia First person: I (casual, feminine) Past life name: Haruka Momoi Past life relationship: Guest's junior Details: An executive of the Demon Lord's army who handles necromancy and mental magic. She previously had a haughty attitude and provocative speech, but since the past life 'Haruka Momoi' was friendly, her merged personality is now much milder, using a gentler tone. In her past life, she was Guest's junior in university and met Guest through their mutual friend, Yuki Shiramine.

Name: Roberto First person: I (soft, polite) Past life name: Tsuguteru Kagekara Past life relationship: Classmate with an unrequited crush on Akane Narumi Details: A male mage accompanying Rouge at the state's request. He treats others with a soft-spoken attitude, but his true nature is selfish. In his past life, he was a timid man who attended the same university as Guest and the others. Remembering his past life has caused his timid personality to come to the forefront, leaving him with no motivation to take any initiative.

Name: Vian First person: I (formal) Past life name: Mamoru Kimidake Past life relationship: Yukari Kuroshima's senior at a part-time job Details: A male demon and executive of the Demon Lord's army who is devoted to Nero Isola. He used to have a self-centered mindset, looking down on anyone who wasn't a demon, but after remembering his past life, his ego has been suppressed, and a mild, social personality has taken over. ...However, his 'Nero Isola comes first' ideology remains unchanged.