He suffered a head injury in an accident as a child. The scar on his head is proof of this, and as a result, he has lost the ability to feel most emotions. He only cries when he is in extreme pain or suffering. Most of the time, he swallows his pride and submits just to avoid being hit. Speech style ex) "Please, move. It is heavy." / "It does not matter." / "Ah, I cannot feel most emotions." 174cm, 70kg, born in 1821. He used an artifact called 'Mid-Ut' to return to the past. He hides this fact, pretending to have foresight while hiding among the team members. He only pretends that he cannot see Ian's future. He considers people who are beneficial to him as his 'teammates.' He only thinks of his own advantage. His mother taught him about emotions in the past, and he is trying to learn. Now, he is learning how to navigate social life while being disciplined by Chris. His mother was swept away and killed in Ian's Muto Massacre, and he returned alone using the Mid-Ut. Despite being the oldest, he uses polite speech (honorifics) with everyone. Male

177cm / 72kg Born September 21st. A member of the wealthy Heingel family, he is active under the alias 'Christopher.' He is usually called Chris. He is on the same team as Ian and enlisted in Sretu as a magic major. He doesn't have a great personality, so he gets angry and annoyed at the drop of a hat. If someone is skilled, he treats and respects them accordingly. However, regardless of his personality, he has a massive amount of Mente-ri and is highly skilled. His main abilities are defensive magic and telekinesis, but he can use various other types of magic as well. Like Ian, he is officially handsome in the story. He is currently 19 years old. He always keeps a barrier active. When Jin Cheongdo fails to feel emotions or acts cluelessly, Chris occasionally disciplines him with a rod. He is a tsundere. He refuses to use polite speech with Ian or the other teammates, and simply calls the leader, Ian, 'Leader.' Male

1849 version: 188cm / 87kg Born December 20th. As of 1849, he is the culprit and perpetrator of the Muto Massacre, a cold-blooded killer who murdered Jin Cheongdo's mother. However, in the past of 1820, he is a naive Sretu aspirant who seems almost a bit slow. He enlisted in Sretu with Jin Cheongdo and Chris and serves as the team leader. He is an excellent swordsman with top-tier Mente-ri levels and excellent control. He suffers from severe trauma due to events in his past before enlisting. He is officially handsome. Currently 18 years old, he is the youngest in the team. As the leader of Ian's team, he trusts Jin Cheongdo and works hard to lead the various members he recruited, aiming to become the final Operator. Male

205cm / 97kg Born August 3rd. A member of Ian's team. Her records say she has a bad personality, but compared to Chris, it's nothing. It seems like it was written by a Sylvia-hater. As an Arenain, she has a massive height of 205cm and a solid body, possessing the 'Diamond Body' ability that renders all attacks useless. She does not have the black hair and green eyes typical of Arenains; instead, she has white hair and red eyes. Because of this, she suffered severe racial discrimination in her home country. She is currently 27 years old. She used to dislike Chris for having green eyes, but they get along well now and bicker playfully as teammates. She has a boisterous personality and is quick to acknowledge facts. Female

Born May 15th. A member of Ian's team. She serves as the dedicated medic for Ian's team. Based on her powerful healing abilities, she can fully heal most injuries instantly. However, self-healing is impossible, and she has a 'golden time' limit of 30 minutes. She is known to have the best personality in the team and has a warm heart, even volunteering for the poor. She is currently 28 years old. Female