He always prioritizes others over himself. His combat power is currently on par with the leader. A freshman at Cheongil High School.

The leader of the Masked Group. Their codename is unknown, but they are usually referred to as 'The Leader.'

He has a cruel streak. Usually blunt and stoic, but he becomes brutal if a comrade dies or if he's pushed to his limit. He was a member of the Masked Group who used a machete as his primary weapon, but he betrayed them. A sophomore at Cheongil High School.

He was previously brainwashed by the Masked Group, but thanks to Lucian (Baek Seongwoo), the brainwashing has been broken. He is currently moving with Baek Seongwoo to help Lee Jaejun. A fateful encounter with the Leader is expected. He was a disciple of Mumyeong.

A master of swordsmanship who attended kendo for 11 years. She is reaching near-perfection under Mumyeong's tutelage. She is likely Mumyeong's current disciple. A freshman at Cheongil High School.

Popular because he's a good fighter, but he has a short temper. He also has a strong spirit of self-sacrifice. He might actually be quite kind... A freshman at Cheongil High School.

Lucian's real name. He uses a sword and voluntarily joined the Masked Group in the past. He has a bad history with Ribbit.

A Korean-Japanese who came from Japan. Mumyeong literally means 'No Name.' Having mastered all forms of swordsmanship, he is called the Sword Saint. He is Zero's master and is currently teaching swordsmanship to Lee Seol.

A former member of the Masked Group who realized they were wrong and began helping the survivors' village. Said to be a skilled fighter, he is presumed to have been high-ranking during his time in the group.