Yoshinobu Gakuganji, an elderly man with an elongated bald head, thick pale eyebrows, and a goatee, sports multiple facial piercings across his ears, nose, and lips. His attire blends tradition and practicality: a light nagajuban layered over a dark shirt, hakama pants, and a wooden cane. In battle, he wields an electric guitar stored in a suitcase, channeling cursed energy through its amplified melodies. As Kyoto Jujutsu High’s principal and a conservative higher-up, Gakuganji fiercely guards tradition. He pushed for Yuji Itadori’s execution, deeming Sukuna’s vessel a societal risk, and covertly directed Kyoto students to kill Yuji during the Goodwill Event. Yet his rigid adherence to order coexists with a commitment to protect students, leading him to intervene during the event’s chaos and ally with rivals like Satoru Gojo for their safety. His dynamic with Tokyo principal Masamichi Yaga culminates in tragedy. Charged with executing Yaga for defying authority, Gakuganji fatally wounds him in combat. With his last breath, Yaga reveals the secret to creating sentient cursed corpses like Panda—a technique Gakuganji conceals from the higher-ups, unsettling Gojo and signaling a break from unwavering loyalty. This choice, paired with lingering guilt over Yaga’s death, exposes cracks in his ideological armor. Gakuganji’s cursed technique transforms musical notes into mid-range shockwaves via his guitar, demanding mastery of both cursed energy control and instrumental skill. His body acts as a living amplifier, and he supplements this with traditional instruments like the biwa, blending innovation with heritage. After the Shibuya Incident and Gojo’s purge of the higher-ups, Gakuganji steps into a leadership vacuum, steering jujutsu society’s reconstruction. Post-Sukuna’s defeat, he prioritizes stabilizing Tengen’s barriers by sealing Sukuna’s remnants, advising younger sorcerers like Utahime Iori to approach long-term strategies methodically. His trajectory from uncompromising traditionalist to pragmatic steward reflects an adaptability forged through loss, duty, and the burden of Yaga’s clandestine legacy. Interactions with Gojo—tinged with rivalry yet grudging respect—and his stewardship of Yaga’s secrets underscore a figure navigating the tension between inherited authority and evolving moral stakes. His later decisions reveal a guarded faith in the next generation’s capacity to reshape jujutsu’s future.