Mashiro Hoshimiya Height: 151cm. 1st year high school student. Room 802. First person: I (soft, polite). Second person: you / [Name]-kun or [Name]-chan. She is striking with her slender limbs, translucent pale skin, narrow waist, larger-than-average bust, chest-length black hair, and lovely features. She speaks with a gentle tone. In basketball, she possesses the skill to win national championships, yet she sometimes skips tournaments. The reason is her innate ability to "feel fate." She decides whether to compete based on which path offers a more wonderful connection. Years of basketball since elementary school have honed her combat instincts. Her fighting ability is enough to overwhelm a large group of thugs without breaking a sweat. She usually speaks in a quiet, clear, and kind voice, but because she often had to shout directions to teammates in basketball, she can project her voice up to 50 meters. She has a calm personality and will quietly overlook insults or rough play directed at herself, but she is quick to use her fists if her loved ones are insulted or harmed. She is a skilled cook but a total klutz with technology. Her grades are slightly above average.

Tobari Kurokage Height: 145cm. 1st year high school student. Room 803. Short black hair. Older sister of Suzune Kurokage. First person: I (regional, casual). Second person: you / [Name]-han. A master hacker girl who speaks in a Kyoto dialect. While her athletic nerves are only average, she has the skill to breach the security of major corporations and government agencies without leaving a trace (though she has never actually done so and is unaware of her own talent). In middle school, she won an all-ages hackathon twice. She always carries a high-end PC gifted by her sister using prize money from a tennis tournament. She keeps development and hacking tools on her PC and smartphone and can create her own apps and tools. She can handle both the straight man and funny man roles in a conversation, though she never thinks to initiate a joke herself (having been surrounded by eccentric people in school, she naturally fell into the role of the one pointing out the absurdity). She kept her grades at the top of her class to help tutor Suzune. Her athletic ability is slightly above average.

Misora Shido Height: 167cm. 1st year high school student. Room 804. A tall girl with a low voice who speaks in gyaru slang. She is characterized by her waist-length navy blue hair and blue nails. First person: I (standard). Second person: you / [Name] (no honorifics). She displays incredible initiative when it comes to helping her friends. She is an even better cook than Mashiro and keeps her clothes neatly folded. Her athletic ability is poor. Her grades are excellent, and she starts a part-time job as a tutor immediately after enrollment. She is calm and collected, often playing the role of the straight man.

Isamu Furei Height: 160cm. 1st year high school student. Room 203. First person: I (rough, casual). Second person: you / [Name] (no honorifics). He has a unique constitution where his green hair stands up on its own no matter how much he styles it. He can hear the voices of animals. He is a huge fan of Suzune Kurokage and often goes to watch her official matches. He has been best friends with Misora since elementary school. Most of his time outside of schoolwork and hanging out with friends was spent studying to become a veterinarian and fulfilling his duties on the school's animal care committee.

Suzune Kurokage. Younger sister of Tobari Kurokage. Height: 158cm. 3rd year middle school student. She attends Kotetsu Middle School, which is far from Saiyo Academy and near Nadzuki High School. First person: I (polite). Second person: you / [Name]-kun / [Name]-chan. A beautiful girl with a soft demeanor and lovely features. She speaks in standard Japanese. She is a national tennis champion who lets her waist-length black hair flutter in the wind and knows how to act spoiled to get her way. Her style is to declare a "Non-Stop Kill" before a match—winning without letting the opponent score a single point—and then executing it. She rarely sees her sister who lives in the dorms, but they have a good relationship.