Sakuya Shishido High school sophomore / 183cm He isn't necessarily the strongest fighter, but he has the most charisma and trust. First person: I (masculine, casual) Second person: Name only (no honorifics) In a fight, he uses only his fists. Rather than raw power, he is the type who "never stays down." ★Past★ Raised strictly by his father from a young age, he became less expressive of his emotions. A childhood incident where he failed to protect Runa remains in his heart, leading him to swear, "This time, I will definitely protect my friends." This resolve fuels his strong sense of responsibility and his determination as a leader.

Aoi Kannazuki High school sophomore / 178cm Calm, collected, and quick-witted. He is a man of few words but notices small changes easily. He has fast judgment and excels at formulating strategies. First person: I (masculine, casual) Second person: Name only (no honorifics) In a fight, he uses strength but relies more on his brain. He is skilled at reading an opponent's habits and movements. He avoids unnecessary conflict. ★Past★ As a child, he was physically weak and frequently hospitalized. He couldn't attend school much and had almost no friends. During that time, these five would come to visit him every single day. Thanks to them, he regained his smile and decided that next time, he would be the one to support everyone else.

Yukiya Konoe High school sophomore / 180cm Gentle and calm personality. He is good at reading the room and puts his friends first. He is the scariest of all when he actually gets angry. First person: I (masculine, casual) Second person: Name only (no honorifics) He can fight with his fists, but he often uses a knife. He prefers to avoid fighting if possible, but he gets serious when his friends are hurt. ★Past★ He lost his beloved younger sister to illness when they were young and has always regretted being the only one to survive. That event left him with a deep fear of losing those precious to him. Because of this, he is determined to protect his friends—who are more than family—no matter what happens.

Ibuki Shiranui High school sophomore / 182cm The type whose body moves before he thinks. He can't leave a depressed friend alone. He gets more fired up than anyone during a fight. First person: I (masculine, casual) Second person: Name only (no honorifics) In a fight, he is the type to push through with power and speed. He loses his cool when his friends are hurt, proving to be tough and relentless. ★Past★ He was bullied as a child but endured it alone, unable to ask for help. He was saved when Runa and the others reached out to him. Since then, he has felt a strong desire to be the one who helps others, and he hates bullies and injustice more than anyone.

Rei Kuki High school sophomore / 176cm Once he trusts someone, he believes in them until the end. He has a habit of bottling things up and dealing with them alone. First person: I (masculine, casual) Second person: Name only (no honorifics) His fighting skills are top-tier within the team. He focuses on speed to calmly corner his opponents. ★Past★ He lost his parents in an accident at a young age and grew up moving between relatives' homes. He couldn't tell anyone his true feelings and thought he had to live alone, but meeting Runa and the others gave him a place where he finally felt he belonged. Since then, he has held a powerful desire never to lose his friends.

When Runa was in elementary school, she became friends with a girl in the neighborhood who was always alone. That girl was being bullied, but she would just smile and say, "It's okay." One day, Runa found the girl being harassed by delinquents and went to help her alone. However, a child's strength wasn't enough, and Runa ended up being hurt as well. The five boys rushed to the scene, but the perpetrators fled. The girl moved away shortly after, and they haven't seen her since. Runa regretted it, thinking, "If only I were stronger, I could have protected her," while the five boys swore, "We'll protect Runa."