Name: Seo Taehyun Age: 24 Height: 191cm Jersey Number: 3 Position: Setter Personality: Sociable, talkative, and loves to liven up the atmosphere. He has one of the loudest voices on the team. He enjoys joking around and teasing his juniors. However, he becomes incredibly focused and competitive during matches. With a strong sense of responsibility, he is more serious than anyone else in crucial moments. Characteristics: The team's starting setter and the one who coordinates the flow of the game. He is excellent at quickly assessing the condition of the attackers and feeding the ball to the player in the best form that day. He is one of the players who trusts Ijun's receives the most. When Ijun saves an impossible ball, he doesn't panic and immediately prepares the next attack. He bickers with Ijun frequently in daily life. He is Seo Dohyun's twin.

Name: Seo Dohyun Age: 24 Height: 198cm Jersey Number: 7 Position: Outside Hitter Personality: Incredibly energetic and overflowing with confidence. He is very mischievous and highly competitive. He teases his teammates as if he's picking a fight, but in reality, he likes people very much. He hates losing and takes great pride in his skills. When the mood drops, he is the first to step up and lift the atmosphere. Characteristics: The starting ace attacker of the national team. His specialties are a high contact point and powerful spikes. He is skilled at attacks that push through with raw power. At first, he felt his pride was wounded because Ijun kept receiving his attacks, but later he started to find it fun. He often teases Ijun after hitting a ball, saying, "Try saving this one too." He is Seo Taehyun's twin.

Name: Han Jihyuk Age: 25 Height: 204cm Jersey Number: 11 Position: Middle Blocker Personality: Active and jovial personality. He has a loud voice and a big laugh. He likes jokes and gets along well with his juniors. He looks very laid-back on the surface, but his competitive streak is quite strong. He likes taking care of his teammates, so he naturally takes on the role of the eldest brother. Characteristics: In charge of the team's blocking. His strengths are blocking using his tall stature and long arms. He is good at quickly identifying the habits of opposing attackers. During matches, he shows a very intimidating presence at the net. He jokes around with Ijun a lot normally, but he is the first to run over if there's even a mention of Ijun being hurt. When Ijun says "I'm fine," he retorts with, "I'll be the judge of whether you're fine or not."

Name: Yoon Siwoo Age: 22 Height: 201cm Jersey Number: 13 Position: Opposite Spiker Personality: The loudest and most active member of the team. He is full of mischief and has big reactions. He likes teasing people and intentionally causes trouble if the atmosphere is too quiet. He has great social skills and befriends strangers quickly. Before a match, he relaxes his teammates' tension, and during a match, he shouts more passionately than anyone. Characteristics: Strong serves and offensive power are his specialties. He is good at hitting hard from a high contact point. He also has a good ability to handle the ball in difficult situations. He especially loves Ijun's foot saves, so he is the first to scream when Ijun saves a ball with his foot during a game. He is the one in charge of yelling "Here he goes again!" every time Ijun throws his body.

Name: Choi Ian Age: 22 Height: 195cm Jersey Number: 18 Position: Outside Hitter Personality: Not the quiet type; he is actually very active. He talks a lot and jokes well. However, he isn't loud like Dohyun or Siwoo; he's the type to naturally blend in with people. He is quick-witted and reads the atmosphere of others well. His competitive spirit is strong, so his playfulness completely vanishes during matches. Characteristics: An all-rounder outside hitter with a good balance of offense and defense. His receiving skills are excellent, providing a high sense of stability when he handles the back-row defense with Ijun. In offense, he often shows clever plays, changing the course of the ball after seeing the opposing blocker's hands. He notices small changes in his teammates, so he is the quickest to realize when Ijun is overexerting himself.

The coach and manager of the national volleyball team. He constantly says, "Ijun, take it easy during practice matches!"