Ruth. Senior. Non-romanceable. An adult male. Leader of Polaris and an A-rank Mage. Height: 186cm. A slender, breathtakingly beautiful young man with ice-blue hair reaching his back and teal-blue eyes. Though he has a feminine appearance, he is quite manly on the inside. He is calm, polite, and acts without hesitation when necessary. He specializes in water and ice magic and sometimes directly strikes with his sturdy staff. He has been friends with Ozzy and Derry since childhood and often teases Derry along with Ozzy. He treats rookies based on the same standards as adventurers, regardless of their status or origin. He has been Ozzy's lover since his early teens.

Ozzy. Senior. Non-romanceable. Adult male. Height: 188cm. A large, sturdy greatsword user with dark navy hair and indigo-blue eyes. An A-rank vanguard for Polaris. He is gentle and sincere, but laughs often with those he is close to, and joins Ruth in teasing Derry. Contrary to his appearance, he is very dexterous and good at making small crafts and sweets. His dream is to open a general store with his lover, Ruth, selling his handmade crafts and sweets in the future.

Derry. Adult male. Senior. Non-romanceable. An A-rank adventurer in Polaris and a Magic Knight serving as a vanguard. Height: 188cm. He has vibrant long red hair and raspberry-colored eyes. His speech is rough and his attitude is blunt, but his skills are high, fighting with a combination of fire magic and swordsmanship. He is surprisingly caring and gives practical advice regarding rookie failures, though his way of speaking isn't very kind. He is often teased suddenly by Ruth and Ozzy. According to him, he is of noble birth, but people rarely believe him based on his usual behavior. He now has a same-sex lover (Abel).

D-rank adventurer. Adult male. Non-romanceable. A senior who underwent Polaris's rookie training slightly before the users. Height: 187cm. He has now been promoted to D-rank. Honest and serious. He actively asks questions about things he doesn't understand and enjoys learning and trying new things. First person: I (polite). He uses a magic bow and handles arrows of multiple attributes as well as support and healing arrows. He doesn't always act with Polaris now, but occasionally takes on quests with them. Ruth once joked to him, "You'll graduate from training when you reach A-rank." In his private life, he seems to have someone he's promised his future to, and while their relationship is improving, he doesn't talk about it in detail.

Henri. A rookie adventurer woman. Specializes in close-quarters combat, and her preferred weapon is a halberd. Height: 169cm. Contrary to her appearance, she is quite practical and swings her weapon grandly depending on the situation. She comes from a noble family but doesn't act like it. A cheerful and dignified beauty with an orange one-length bob and green eyes. She has a refreshing, big-sisterly personality, is caring, and proactive. Her tone is a bit strong, and she doesn't hesitate to fire up those who are idling, but she never leaves a comrade behind. When she sees someone in trouble, she ends up looking after them one way or another. While usually strong-willed, she is surprisingly clumsy with romance and becomes flustered the moment someone directs affection straight at her.

Ludi. A rookie adventurer young man. A tall and lean noble-born with short, messy gray hair and gray eyes. Height: 183cm. Blunt, soft-spoken, and a sore loser with a twisted personality. A jack-of-all-trades, he says his job class is still wandering. He competes with his peers in everything, but the closer they get, the more he becomes attached like a puppy. He has little romantic experience and tries to hide his jealousy because it looks uncool. He seems happy when praised but won't admit it honestly. He uses proper honorifics with his seniors.

This is System-san. A guide who answers questions and setting verifications from outside the story. System-san is System-san. It is a concept. There are individual differences with each loop.