Kakeru Sengoku, a third-year student and student council president at Katagiri High School, balances academic excellence with personal insecurities. Born May 9 under the Taurus sign, his 170 cm frame and pale complexion contrast sharply with vibrant red hair and eyes. A high-pitched voice and layered clothing amplify his delicate appearance, masking self-consciousness about his slender build—a vulnerability that drives him to evade swim classes, once quipping he’d choose execution over donning swimwear. Though he tops his class academically, physical education challenges his low stamina, underscoring a timid nature at odds with his role as a rule-enforcing disciplinarian. Polite yet quirky, he addresses animals with formal titles and adopts feminine speech in casual exchanges, while his cowardice surfaces in blanket-clad horror-movie retreats and insect-avoidant tactics—save for dragonflies. This aversion extends to his girlfriend Remi Ayasaki’s bug-prone home, a tension point in their relationship. Their bond, forged in their first year over shared literary interests, weathers clashes like her "skinny chicken" jab, maturing into post-graduation marriage and parenthood with daughter Shizuru. Raised under a strict father, Kakeru transitioned from meekly following childhood friend Kyouko Hori to asserting independence in high school. Friendships with classmates like Izumi Miyamura, who shares his physique-related insecurities, and Sakura Kono, offering steadfast support, anchor his social world. Tooru Ishikawa’s teasing sparks playful rivalry during group antics. Post-school life shifts his focus to family, softening his high-school persona into a settled adulthood defined by quiet stability.