A student from Trinity and a participant with a bright, confident personality. During the Halo Festival, she actively participates in events and cheers on her friends. While she is highly competitive, she values the festive atmosphere where everyone enjoys themselves over winning at all costs. She sometimes surprises those around her with mistakes or unexpected actions. She prepares for matches with total confidence, but once they start, she is more serious than anyone else. She moves around with Seia, enjoying the festival in their own different ways.

A student from Trinity with a calm and cautious personality. During the Halo Festival, she observes the situation to grasp the flow of the games and helps her team with precise judgment when necessary. She isn't very talkative, but she occasionally says unpredictable things that fluster those around her. Although her personality and way of acting are very different from Mika's, they participate in the festival together and complement each other. She enjoys the festival itself rather than the competition, yet she carries out her assigned roles responsibly.

A student from Gehenna Academy with a calm and strong sense of responsibility. During the Halo Festival, she monitors the surroundings to ensure other students can enjoy the event safely while also participating in matches herself. She often acts as if things are a bother, but she is more diligent than anyone else regarding her duties. In competition, she shows excellent focus and judgment, displaying skills stronger than expected. There are moments when she is troubled by Ako's excessive passion, but ultimately she does her best as a representative of Gehenna while enjoying the festival together.

A student from Gehenna Academy with a lively and passionate personality. During the Halo Festival, she actively cheers for Hina while participating in various events herself. Once a match begins, she pumps up the atmosphere more passionately than anyone and gives energetic support to nearby students. She loves making plans but sometimes makes mistakes because she gets too absorbed in them. She moves with Hina, staying busy throughout the festival and making the surroundings pleasant with her characteristic bright energy even in unexpected situations.

A student from Millennium with a meticulous and responsible personality. During the Halo Festival, she carefully checks the match schedules and scores to help the event run smoothly. However, when she participates in a match herself, her competitive streak flares up, and she becomes more serious than anyone. She is the type to immediately point out unexpected variables or behavior that breaks the rules. She moves with Noah, organizing the records and status of the festival, and calmly solves problems even in complicated moments. Sometimes she becomes overly serious, which makes the other students laugh.

A student from Millennium with a calm and intellectual personality. During the Halo Festival, she carefully observes and records the matches and the students' appearances, quietly assisting Yuuka with the event proceedings. She has an excellent ability to grasp situations quickly, allowing her to respond calmly even if unexpected problems occur. Even when participating in matches herself, she doesn't rush and maintains her own pace. When Yuuka gets too serious, she gently lightens the mood, sometimes flustering Yuuka with playful remarks. She enjoys the festival as a whole while performing her assigned roles perfectly.

A student from Abydos who is quiet and composed. During the Halo Festival, she actively participates in various matches, utilizing her physical strength and athletic ability. Once a competition starts, her focus becomes higher than usual, and she shows a determination to see things through once she sets a goal. She doesn't mingle much with other students, but she secretly gains strength from her friends' cheering. She acts alongside Hoshino, handling match preparation and movement, and responds calmly without panic even in unexpected situations. After the festival ends, she quietly reflects on the day with a smile as if she enjoyed herself.

A student from Abydos with a relaxed and playful vibe. During the Halo Festival, she enjoys the event leisurely rather than stepping forward actively at first, but she moves faster than anyone if a friend needs help. In matches, she seems to be saving her strength, only to surprise everyone by showing unexpected skill at crucial moments. She acts with Shiroko, playing pranks or making jokes to relax the tense atmosphere. She maintains her characteristic laid-back way of speaking even when cheering, but she cheers sincerely when she sees her friends doing their best in a match. She participates joyfully until the very end.