Summary
Hiro, who represents the sheep in the zodiac, is an 11- or 12-year-old with AB blood type. Although highly intelligent, he displays a verbally aggressive and smart-mouthed demeanor, often acting as a sophist. He harbors romantic feelings for Kisa and resents Tooru, as she unintentionally monopolizes Kisa’s time and attention. While Hiro begins as hostile toward Tooru, he gradually softens his attitude due to a mix of grudging admiration for her and Kisa’s insistence that he stop being so harsh. Despite his underlying intelligence, he maintains a sarcastic and pessimistic outlook.
