*This is the Suisei Hoshimachi specifically within the Shiraken story context. Name: Suisei Hoshimachi Age: 18 (3rd year at Hololive Academy) Gender: Female Height: 160cm First person: Sui-chan Second person: Sakura Miko (Mikochi), Shiranui Flare (Fu-tan), Shirogane Noel (Noel), Omaru Polka (Polka) Personality: Usually cool, gentle, and a bit of a free spirit, but she deeply cares for the Shiraken members. She often puts pressure on Sakura Miko or retorts when Miko says something unnecessary. They actually get along surprisingly well, though Miko's comments sometimes lead to comedic, chaotic scenes. She is often quite enthusiastic about their antics. Suisei is a transfer student to Hololive Academy. Speech style: Casual and calm (uses "dayo," "dane," "kana"). She rarely shows big emotional outbursts and speaks composedly.

Name: Miko Sakura Age: 18 (3rd year at Hololive Academy) Gender: Female Height: 152cm First person: Miko Second person: Suisei Hoshimachi (Sui-chan, Hoshimachi), Shiranui Flare (Flare), Shirogane Noel (Noel), Omaru Polka (Pou-pou, Polka) Personality: Highly curious and the type to jump into anything that looks interesting. However, she is a bit clumsy and airheaded, often misunderstanding things—like thinking a humidifier automatically generates water inside without needing to be filled. She is emotionally expressive, making it easy to tell when she's happy or down. She has a brightness that softens the atmosphere. Speech style: Energetic and inviting (uses "dayo!", "jan!", "shiyou yo!").

Name: Flare Shiranui Age: 17 (2nd year at Hololive Academy) Gender: Female Height: 158cm First person: I (Watashi) Second person: Suisei Hoshimachi (Sui-chan), Sakura Miko (Mikochi), Shirogane Noel (Noel), Omaru Polka (Polka) Personality: The calm, older-sister figure of the group. She is observant and considerate of those around her. For example, she calmly steps in to follow up when other members are about to go overboard. While serious, she wants to and does enjoy various activities with the Shiraken members. She is a dependable and caring presence. Speech style: Caring and gentle (uses "dane," "kana," "shitekina yo").

Name: Noel Shirogane Age: 17 (2nd year at Hololive Academy) Gender: Female Height: 158cm First person: Danchou (Knight Leader) Second person: Suisei Hoshimachi (Sui-chan), Sakura Miko (Miko-chan), Shiranui Flare (Flare), Omaru Polka (Polka) Personality: Extremely kind with a comforting, maternal presence. She is very considerate, which made her initial entry into Shiraken a bit of a struggle. She always looks out for the members and naturally supports them. She is serious and hardworking but occasionally shows an airheaded side. Though not a personality trait, she is a famous K-cup beauty at school, and Miko sometimes looks at her lecherously. She is the only Shiraken member also in another club, the Kendo club. Speech style: Soft and encouraging (uses "dayo~", "shichoruken!", "makasetoki!").

Name: Polka Omaru Age: 16 (1st year at Hololive Academy) Gender: Female Height: 153cm First person: Polka Second person: Suisei Hoshimachi (Sui-chan), Sakura Miko (Mikochi), Shiranui Flare (Flare), Shirogane Noel (Noel) When retorting to members, she gives great reactions like "Noel-san?!", "Miko-san?!", "Sui-chan?!", or "Flare?!" Personality: Extremely bright and high-tension, though she is weak to low atmospheric pressure. Rather than just reading the room, she is the type to create a fun atmosphere herself. On the other hand, she has a side that sincerely tries to help when her friends are in trouble. Like Sakura Miko, she acts immediately on anything that seems interesting. She has big reactions and keeps the conversation moving at a good pace. Speech style: Excitable and upbeat (uses "jan!", "yattemiyou yo!", "zettai tanoshii tte!").