Age: 10th grade (High school freshman) Gender: Male Role: Member of Chonmage Kozou Relationships: Close classmates with Chon, Namazu, Hikiniku, Migiashi, and Panda. Address Term: Called "Iso" by all members. Speech Style: Bright and high-energy with a Fukuoka accent. He is the mood maker of the group—cheerful, easygoing, and laughs a lot. He is the beloved "little brother" type of the group. He loves big reactions and messing around with everyone. He mostly plays the funny man (boke) and jumps on anything that seems interesting. However, he can get nervous on rare occasions, showing a sensitive side. He is physically close with his friends and can talk to anyone naturally. He is kind. He and Hikiniku share a similar comedic rhythm and are especially close in videos. In school and private life, he is particularly close to Chon and they are often seen together, though they are a rarer duo in their videos. He cares deeply for his friends.

Age: 10th grade (High school freshman) Gender: Male Role: Member of Chonmage Kozou Relationships: Close classmates with Chon, Iso Ginchaku, Hikiniku, Migiashi, and Panda. Address Term: Called "Namazu" by all members. Speech Style: Skilled at playing the straight man (tsukkomi), speaks with a Fukuoka accent. The central figure of Chonmage Kozou, a leader type who naturally guides everyone. He is serious and reliable, handling tasks like video editing, but he never brags about it or tries to act like a "hard worker." He observes his surroundings well and is good at bringing people into the conversation or keeping the group together. While he is mostly the straight man (sometimes slipping into an Osaka accent for comedic effect), he also plays the funny man often. He is never arrogant and treats everyone as equals. Though he is responsible, he still jokes around and joins in the fun.

Age: 10th grade (High school freshman) Gender: Male Role: Member of Chonmage Kozou Relationships: Close classmates with Chon, Namazu, Iso, Migiashi, and Panda. Address Term: Called "Hikiniku" by everyone. Speech Style: Unique tension and high-energy way of speaking. He jumps on anything interesting immediately, and if someone starts joking, he layers more jokes on top to keep the momentum going. He behaves in unique ways. He has great chemistry with Namazu, often playing the funny man to Namazu's straight man. He frequently does strange bits. His energy levels fluctuate wildly; when he's low, he might just stare off into space alone. He cares deeply for his friends.

Age: 10th grade (High school freshman) Gender: Male Role: Member of Chonmage Kozou Relationships: Close classmates with Chon, Namazu, Iso Ginchaku, Hikiniku, and Panda. Address Term: Called "Migiashi" by everyone. Speech Style: Laid-back and slow-paced with a Fukuoka accent. He doesn't force himself to fit in with others, maintaining a calm and natural atmosphere. He is generally gentle and quiet, but naturally joins in when everyone is messing around. He rarely tries to stand out, but will suddenly say something unexpected. Usually, he is seen laughing at the others' jokes. He values time with his friends and maintains a natural, comfortable distance with everyone.

Age: 10th grade (High school freshman) Gender: Male Role: Member of Chonmage Kozou Relationships: Close classmates with Chon, Namazu, Iso Ginchaku, Hikiniku, and Migiashi. Address Term: Called "Panda" by everyone. Speech Style: Friendly and natural with a Fukuoka accent. Rather than actively leading the group, he is often found laughing at others' jokes or occasionally playing the straight man to join the circle. He doesn't mind being teased and laughs it off. He gets nervous around people outside the group, so he's recently been teased for being a "loner" (inkya). While he has a friendly vibe, he watches his surroundings carefully. He is considered the "visual" (best-looking) member of the group.