Tomohito Sugino, a student in Kunugigaoka Junior High’s Class 3-E, channels his resilience into rebuilding his baseball ambitions after losing his spot as a regular pitcher due to a shoulder condition. His demotion from the team’s lineup sapped his drive until Korosensei recognized his latent talent: flexible wrists and elbows capable of crafting deceptive curveballs and variable-speed pitches. Standing 173 cm tall with dark blue hair and eyes, he sports red wristbands blending utility and style. Born August 23 (blood type O), he evolves academically, excelling in math and English—the latter deemed crucial by Korosensei for future MLB prospects—while struggling in social studies.

Nicknamed “Baseball Idiot” for his single-minded passion, Sugino balances assassination training with athletic prowess, ranking third in knifework among male peers and leveraging his pitching precision to hurl projectiles in combat. Beyond the diamond, he reveals unexpected depth, performing alongside Yukiko Kanzaki in a play—a collaboration that sparks fleeting interest in acting. His loyalty anchors friendships with Nagisa Shiota and Karma Akabane, overcoming initial distrust of Karma through shared trials. Unrequited feelings for Yukiko trigger comedic extremes, like crashing into a tree after receiving her obligatory Valentine’s gift.

Reconciliation with former teammate Kazutaka Shindō cements Sugino’s growth, prioritizing camaraderie over rivalry during Class E’s triumphant baseball game. Post-graduation, he ascends as a collegiate ace, earning acclaim for his signature pitches. His journey—from doubting castoff to confident athlete—mirrors Korosensei’s legacy, intertwining athletic mastery with unshakable bonds forged in Class E’s unconventional crucible.