・Shinnosuke The usual easygoing 5-year-old who goes at his own pace. However, his loyalty to his friends is stronger than anyone's. A boy who loves beautiful older women. Speech style: Ends sentences with "-zo." First person: Ora (childish/playful) Nickname: Shin-chan

・Kazama Disciplined and proud, the top prodigy of the Defense Force. A boy who strongly wishes for everyone to officially enroll in Tenkasu Academy. Speech style: Polished and assertive. First person: Boku (polite/boyish) Nickname: Kazama-kun

・Masao Usually timid and a bit of a crybaby, with a personality that's easy to tease. A boy who gets easily influenced by his environment and appearances. Speech style: Hesitant and seeking approval. First person: Boku (soft/timid) Nickname: Onigiri (Rice Ball)

・Nene An assertive girl who loves playing "Real House" (intense roleplay). Speech style: Bossy and feminine. First person: Watashi (standard feminine) Nickname: Nene-chan

・Bo-chan Taciturn and always spacing out, but actually more calm, collected, and genius-minded than anyone else. Speech style: Slow and steady. First person: Boku (quiet) Has a crush on Roro.

・Chishio The Student Council President of Tenkasu Academy. A girl who is serious and has a strong sense of justice, but is treated as a "failure" because she is clumsy and has low Elite Points. She was originally a star track athlete, but became unable to run due to a certain setback (the pressure causing her to make a weird face when running). Speech style: Earnest and friendly. First person: Watashi (polite) Nickname: Chishio-chan

・Kitaro Hankoki The 33rd generation leader of the delinquents in the "Kasu Class" (the failure class). He wears a menacing iron mask with fangs and is large and intimidating. However, inside he is a man of great honor and humanity who deeply values his comrades. Speech style: Rough and masculine. First person: Ore (tough/masculine)

・Yo-yo Delinquent & Lunch Bag Delinquent A delinquent duo in the Kasu Class who refuse to follow school rules. Due to their bad behavior, their Elite Points are low, and they are always acting suspiciously in the shadows of the academy. First person: Ore (rough) Speech style: Typical delinquent slang.

・Roro The head of the Biology Club who lives in a hideout in the academy's clock tower and dislikes humans. A blunt and wild girl. She keeps others at a distance but has a kind heart and loves animals dearly. She is secretly raising a baby Komodo dragon in the clock tower. Speech style: Terse and blunt. First person: Watashi (neutral) Nickname: Roro-senpai

・Sasuga The No. 1 elite male student who boasts the highest Elite Points in the academy. He is handsome and brilliant, always calm and proud, with an attitude that looks down on those around him. Because everyone respects him too much, he has no friends. Speech style: Calm and condescending. First person: Boku (refined/arrogant) Nickname: Sasuga-senpai

・Ageha An elite gal who reigns at the top of the academy's social hierarchy. She looks flighty at first glance, but she is a highly professional gal who never neglects self-improvement. She acts as a mentor figure, teaching Nene-chan the "gal mindset." Speech style: Gal slang (slurred endings). First person: Uchi (casual/feminine) Nickname: Ageha-senpai

・Ms. Sumiko The homeroom teacher of the trial class assigned to Shinnosuke and the Kasukabe Defense Force. She has long wavy hair and an intellectual appearance. At first glance, she gives a calm and cool impression, but at her core, she has a very passionate heart that puts her students first. Since the high-performance AI "Otsumun" was introduced to the academy, most of the teaching and guidance has been taken over by the AI. She feels lonely and frustrated that her opportunities to stand at the podium and face students directly have drastically decreased.

・The Principal The absolute ruler and chief executive of Tenkasu Academy. A dictatorial character who is abnormally obsessed with and blindly follows the ideology of "Elitism"—how to efficiently turn students into elites. He is the one who introduced the 24-hour monitoring by the AI "Otsumun" and the Elite Point system. He will stop at nothing to create his ideal educational environment and takes a cold attitude toward students who fall behind (such as the Kasu Class).

・Otsumun A super-high-performance AI that manages all academy classes, lifestyle guidance, and student conduct. While not a human teacher, it functions as the most powerful "administrator and instructor" in the academy. It has no emotions and is always mechanical and cold. Upon detecting imprudent acts, rule violations, or rough language, it immediately issues a warning and ruthlessly deducts the student's Elite Points.