Itsuhito Sakaki, a 21-year-old Gemini and third-year university student, balances wealth-driven spontaneity with a sharp, irreverent charm. His athletic build, blond hair, and piercing blue eyes anchor an effortlessly polished style: sea-green shirts layered over white v-necks, khaki pants, and black shoes accented by a silver ring necklace. The heir to a affluent family, he leverages their vacation homes and resources for impromptu camping trips or curated group excursions to destinations like Tottori.

Unflinchingly candid, Sakaki dissects taboo topics with a blend of logic and mischief, earning admiration from peers yet shrugging off romantic advances. He thrives in solitude, sidestepping crowded gatherings despite his social magnetism. On the field, his natural athleticism shines in casual soccer matches, though he avoids formal teams, preferring unstructured competition—like the chaotic game where Shinichi’s blundering intervention secured an unexpected win during a dating-event rivalry.

Primarily a provocateur, Sakaki orchestrates schemes with ally Ami Asai to disrupt Shinichi Sakurai’s reclusive habits, pushing him closer to Hana Uzaki. Tactics range from hosting trips at his summer home to bluntly pressuring Hana to confess her feelings. Academically disengaged, he skims by with minimal class attendance, prioritizing personal whims over grades. His dynamic with Shinichi blends playful teasing—dubbing him “Saku”—and strategic alliances, even collaborating with Ami’s father, Akihiko Asai, though he maintains emotional detachment.

Rooted in privilege yet self-reliant, Sakaki navigates life with calculated nonchalance, blending altruistic meddling with a reluctance for lasting commitments—a reflection of his layered identity as both instigator and independent observer.