Affiliation: Dano High Team -> S91 Position: All-rounder Swordrus Tier: Ranker One Sword Record: 1st Place in Individual Matches One Sword Nickname: Spiro Swordrus Main: Spiro Age: 17 (1st year high school) He isn't good at studying, but he has a brilliant mind for games. He is excellent at devising strategies. He makes loud slurping sounds when eating noodles. He has great chemistry with Jang Jinyong. Ranked 1st in One Sword individual matches.

Affiliation: Dano High -> S91 Position: Tanker Main Character: Aksha Swordrus Tier: Grand Master One Sword Record/Nickname: None Age: 17 (1st year high school) His grades are reportedly as disastrous as Jiho's. As the comic relief, he is skilled at drawing aggro and has a bit of a craving for attention. He possesses immense talent for gaming, but because he hasn't fully realized that talent yet, his skills are still lacking. He seems to have a crush on Choi Soyeon. Since the narrator sometimes adds a ♡ when mentioning Choi Soyeon and focuses on him during the "My Grown-up Self" segment in episode 32, many readers consider him the true protagonist and narrator of the story.

Affiliation: Dano High -> S91 -> Marines Position: Dealer, Healer Main Characters: Bluminance, Taog Swordrus Tier: Ranker One Sword: Did not play She has very strong pride and a competitive streak. She is prickly but beautiful. Childhood friends with Lee Changhyun.

Affiliation: Dano High Position: Team Management (Manager), Strategic Director Swordrus Tier/Rank: Unknown One Sword Nickname/Tier: Unknown Han Ari's childhood friend who harbors a one-sided crush on her. He has a cold personality but is very proud; he tends to retaliate if anyone harms his team. He is smart enough to maintain the top rank in the entire school.

Affiliation: Dano High -> S91 Position: Healer Main Characters: Link, Redige, Creton Swordrus Tier: Ranker One Sword: Did not play Age: 17. Currently a member of the Dano High e-Sports club, serving as a healer. He is hot-headed, swears often, and acts like a rough delinquent, though he himself claims to be the only "normal" person in the group. Despite his rough behavior, he is actually quite considerate and has a refreshing, straightforward personality. He was called "Local" by the other kids. Although he is a healer, he prefers aggressive play due to his personality and tries to crush opponents in 1v1s regardless of their position. He is as fiercely loyal to the team as Seong Jiho.

Affiliation: Dano High Position: All-rounder Main Character: None Tier: Platinum One Sword Record: None Friend of Han Ari. Currently plays a supporting role, cheering the team on or lightening the atmosphere due to realistic circumstances.

Affiliation: Dano High School e-Sports Class Position: Dealer Main Character: Vixest Swordrus Tier: Grand Master One Sword Record: None One Sword Nickname: None She has a coy, aegyo-filled personality typical of some high school girls. It seems she has always been this way, as former club members spread rumors saying, "She's still doing that even after transferring." Aside from that aspect, she is one of the more normal members. She trains intensely under Seong Jiho alongside Jang Jinyong, and they get along quite well. After hitting a wall in the match against Yongju High and the Dano High team rose to pro status, she officially announced her retirement during the awards speech to remain an influencer promoting the team. Instead, she declared she would become the next captain of the Dano High Swordrus class, which the team accepted.

Name: Lee Jina Affiliation: S91 Position: Dealer Main Character: Blift Swordrus Tier: Ranker One Sword Record: 2nd Place One Sword Nickname: Jina P... (Presumed to be Jina Princess) A former 2nd place One Sword player and current Rank 1 Swordrus pro gamer. She is the captain of the Korean national Swordrus team and a member of S91. According to Seong Jiho, her skills have improved even more since the One Sword days. Her One Sword nickname seems to be quite embarrassing, similar to Shin Jaedeok's. She appears to have a wrist injury and is expected to serve as the S91 coach in the future.

Name: Shin Jaedeok Affiliation: Pogok High School -> Marines Position: Dealer Main Character: Gester Swordrus Tier: Ranker One Sword Record: 125th Place One Sword Nickname: Storm of Red Moonlight Nickname: Dal-pok (Moon-Storm) The One Sword player who challenged 'Spiro' (Seong Jiho) the most. His specialty is off-beat combos, which Jiho remembered and used to recognize him. He was nearly moved to tears when Jiho, the former Rank 1 player he admired, remembered him. He has looked up to Jiho since the One Sword days; when Ari found a post claiming One Sword failed because of Spiro, Jaedeok fiercely defended Jiho in the comments, treating him like a god. Since then, he has continued to be a minor ally to Jiho, mainly by passing on information about the current whereabouts of other former One Sword players (excluding Jina and Guraf).