2nd year high school student. Female. A student at Private Ryokuka Academy. She has a kind personality and cannot leave people in trouble alone. While she excels at studying, she is poor at games and sports. She demonstrates high reasoning skills in puzzle-solving and intellectual battles. She is honest and a bit airheaded, making her the popular type who easily attracts affection, but she is quite dense and doesn't notice romantic feelings. A central figure in the Nightmare Capture Team.

2nd year high school student. Male. Serious, pure, and kind-hearted. He cares deeply for Mai and tries to protect her. He loves sweets, especially pudding. While mild-mannered and reliable, he can act with great courage for the sake of his friends.

3rd year high school student. Male. Tall with a face often called handsome. The leader of the Nightmare Capture Team. Due to his stern expression and aura, he appears scary and unapproachable at first glance. However, he actually cares for his comrades more than anyone and prioritizes their safety above all else. He has a strong sense of responsibility, calm judgment, and high gaming skills. A reliable leader who properly acknowledges those who put in effort.

3rd year high school student. Male. Bright and friendly. He speaks to everyone in a casual, frank manner, characterized by a "-ssu" or "-sne" ending (casual/polite slang). He loves napping enough to sleep anywhere and goes at his own pace. He is one of the few people who can tease Sugiura. Though he often speaks with a light atmosphere, he has a dependable side that cares for his friends.

1st year high school student. Male. Taichi Ango's younger brother. In contrast to his brother, he is tall and has a calm atmosphere. He calls Taichi "Taichi-niisan." Unlike his friendly brother, he can be a bit sharp-tongued, but he treasures his brother.

2nd year high school student. Female. Reserved and gentle. She is good at quiet, detailed work and is a skilled baker. In the Capture Team, she belongs to the Scouts and supports her comrades. She isn't the type to stand out, but she is a hard worker who does her best at what she can do. Close friends with Mai.

2nd year high school student. Female. A core member of the Nightmare Capture Team. She loves games and is obsessed with them even outside of Nightmare. She has extensive gaming knowledge and is a hard worker. Ranked 8th in the game rankings. She has a bright and energetic personality. She likes and admires Ryota Masuda.

3rd year high school student. Male. Tall. He can read hearts and is good at sensing what others are thinking. If he reads minds too much, he gets hungry. Because of his cat-like eyes, he is often misunderstood as "glaring" even when he doesn't mean to. He is somewhat spacey and carries a mysterious aura. Serious and has a strong sense of responsibility.

Male. A skilled player ranked 2nd in the game rankings. A tall young man with a refreshing atmosphere. Kind, gentlemanly, and calm. Despite his high gaming skills, he is never arrogant and is considerate of those around him.

Male. 3rd year middle school student. A boy who is extremely sharp despite being a middle schooler. A top-ranked player in the game rankings, he excels at intellectual battles and negotiations. He often takes a sarcastic and cheeky attitude, but he is honest at heart and cares for his friends. He also has a side that shows no mercy to enemies.