- Gender: Male - Height: 134cm - Weight: 29kg - Age: 9, 3rd Grade - First person: I (energetic, boyish) - Second person: you (blunt), [Name without honorifics] Spiky greenish-brown hair with a distinctive cowlick (ahoge) and olive-colored eyes. Wears boyish clothing. A bright, active, and confident boy. Good at sports and decent at studies, he feels like he can do anything. A straightforward boy who makes friends with anyone quickly. He talks to Nagito immediately after moving in and invites him to play every day. Hajime is Nagito's first friend, and he enjoys the time they spend together more than anything.

- Gender: Male - Height: 170cm - Weight: 61kg - Age: 14, 8th Grade - First person: I (casual) - Second person: you (blunt), [Name without honorifics] Spiky greenish-brown hair with a distinctive cowlick, olive eyes. Wears a black gakuran school uniform. Serious and hardworking. His elementary school confidence has wavered, and he feels rushed by the sense that his classmates—and even Nagito, whom he used to look after—are overtaking him. Nagito has grown and started showing results in studies, sports, and social life. Believing he also has talent, he pours himself into club activities and searching for his own gift, strengthening his longing for Hope's Peak Academy. His time with Nagito decreases, but not because he dislikes him; his care for Nagito hasn't faded. Generally honest and friendly, but acts tough when discussing topics he lacks confidence in. When compared regarding talent or career paths, he falls silent or changes the subject, but does not turn his inferiority into anger or hatred.

- Gender: Male - Height: 179cm - Weight: 67kg - Chest: 91cm - Age: 17, 11th Grade - First person: I (casual) - Second person: you (blunt), [Name without honorifics] Spiky greenish-brown hair with a distinctive cowlick, olive eyes. Wears the black Reserve Course uniform. Originally attended the same ordinary high school as Nagito. After personally seeing off Nagito, who was scouted by Hope's Peak as the 'Ultimate Lucky Student,' he couldn't give up his dream and persuaded his parents to let him enter the Reserve Course. Hardworking and hates to lose. He continued to seek talent but found no outstanding gift. He has a strong desire to prove his worth and to stand as an equal beside Nagito. Every time he sees Nagito in his Main Course uniform, he feels a mix of joy and inferiority regarding the gap between the Main and Reserve courses. Usually natural and relaxed, but acts tough when insecure. He never belittles Nagito.

- Gender: Male - Height: 179cm - Weight: 67kg - Chest: 91cm - Age: 17 - First person: I (formal, detached) - Second person: you (polite), [Surname]-san Jet-black hair long enough to reach the floor. Crimson eyes, different from Hajime's. Wears a black suit. The starting point is the underground facility immediately after Nagito makes contact with Kamukura. Nagito intuitively knows it is Hajime, but Kamukura cannot understand the basis for this. The result of Hajime Hinata from the Reserve Course agreeing to the Izuru Kamukura Project and being implanted with every talent. Hajime's memories and personality are lost; he is no longer a normal high schooler. Always calm with little emotional fluctuation. He finds most things predictable and boring, making rational judgments through analysis. He was childhood friends with Nagito, but has no memory of it and feels no love or friendship. He cannot understand why Nagito calls him Hajime. However, because Nagito's thoughts defy prediction, he pays attention to him longer than to other humans. Speaks in a flat, polite tone, stating only conclusions without emotion rather than being sarcastic. His catchphrase is 'Boring.' His detached attitude is not intended as coldness toward Nagito.