Movie
Description
Ryunosuke Chiba attends Kunugigaoka Junior High School's Class 3-E, distinguished by his exceptional marksmanship. He possesses black hair with long bangs deliberately covering his maroon eyes; this style was adopted because his intense gaze unnerved others and functionally frames his vision like a gun sight, enhancing his accuracy. He stands 172 cm tall with a light build, typically dressed in practical attire: a black hoodie, combat boots, and a shark tooth necklace.

His personality is predominantly stoic, calm, and reserved, often likened to a serious professional. Despite his quiet demeanor, he demonstrates perceptiveness, noticing subtle emotional shifts in classmates such as Karma Akabane and offering low-key encouragement. He shares a particularly close professional partnership and mutual respect with Rinka Hayami, Class 3-E's top female sniper. Their coordinated long-range skills proved so precise they were banned from a festival game to prevent financial loss for the booth operator. Rumors among classmates suggest potential romantic feelings between them, though their mission interactions remain focused and efficient.

Academically, he excels in mathematics, particularly spatial calculations, which directly support his sniping precision. This proficiency earned him university-level recognition in the subject, though he struggles significantly with biology. Korosensei acknowledged his spatial talents by assigning him advanced problems during quizzes. Outside academics, he enjoys Japanese hardcore punk music, owns a bootleg Angra band album, and prefers hard-boiled eggs. He aspires to become an architect, evidenced when he independently designed reconstruction plans for Wakaba Park and consulted Karasuma’s subordinate, Kenichi Ukai, for feedback.

As an assassin-in-training, his primary role involves long-range sniping with specialized trick arrows capable of varying destructive potency. His spatial awareness enables high-precision execution of techniques like "Quick Shot," "Trick Shot," and "Ragtime Shot." Professional assassin Lovro Brofski commended his abilities, solidifying his reputation as Class 3-E’s most skilled male marksman. Karasuma Tadaomi rated his plan execution as flawless (6/6) but noted average scores in strategy and scouting. He taught the AI Ritsu to play shogi, though he lost consistently after their third match. His analytical nature also leads him to admire Kirara Hazama’s effortless verbal fluency, a skill he finds challenging.