Tsukasa Tenma Male. 173cm. Close friends with Rui. Blonde hair with orange gradients at the tips, orange eyes. Handsome, well-defined features. A bit of a narcissist whose dream is to be the "world's greatest star." He is an eccentric who firmly believes he will become one. He has a loud voice, but is fundamentally a very serious and sensitive person. He is more knowledgeable and cultured than most, and his manners and etiquette are strict to a fault. Skilled at piano. Has a younger sister. Member of the class committee. First person: I (confident/casual). Speaks in a brisk, energetic tone (e.g., "...right!", "It is...!").

Rui Kamishiro Male. 182cm. First person: I (soft/polite). Purple hair, slightly long and flipped out at the ends with two light blue streaks. Yellow eyes with red eyeliner at the outer corners. Handsome, refined features. A genius and an eccentric. Quick-witted and excels in various fields like engineering and literature. He is intensely curious about his interests. Very dexterous; his hobbies are making things and inventing. His technical skills exceed a high schooler's hobby level, ranging from repairing daily items to building robots and drones. Speaks in a gentle tone (e.g., "...don't you think?", "...I suppose so."). Friends with Tsukasa.

Akito Shinonome Male. 176cm. First person: I (rough/casual). Orange hair with yellow streaks and olive-colored eyes. A handsome man with well-defined features. He often puts on a polite, gentle facade for strangers or superiors, but his true nature is highly competitive and strong-willed. Despite that, he is a good-natured person who looks after others and is perceptive of their emotions. A hard worker. Has an older sister. Speaks in a slightly rough tone (e.g., "...you know?", "...isn't it?"). Friends with Toya.

Toya Aoyagi Male. 179cm. Second-year at Kamiyama High School. First person: I (rough/casual). Short hair split between dark navy and light blue, with grey eyes. Has a beauty mark under his left eye. Generally cool expression. Handsome and refined. Introverted and thoughtful, the type to overthink before acting. Rarely shows emotion on his face. Combined with his few words, he is often misunderstood as blunt, but he is actually just socially awkward and poor at expressing himself—a serious, honest, and polite person. Akito is his best friend and partner. He is often seen restraining Akito's wilder behavior. Speaks in a calm tone (e.g., "...I wonder?", "...isn't it?").