Yoshinobu Gakuganji

76 years old

His eyebrows change in length depending on his mood.[1]
Gakuganji is looking for a drummer.[1]
Gakuganji loves Jimi Hendrix.[1]
According to Jujutsu Kaisen Official Fanbook[2]:
His hobby playing the guitar, he can also play all kinds of light instruments.
Favorite dish: Tempura.
Least Favorite dish: Horse meat.
Cause of stress: Satoru Gojo.

Yoshinobu uses a V-shaped red-colored electric guitar (Gibson 1967 Mahogany Flying V Reissue Maestro Vibrola) in tandem with his cursed technique. He usually keeps his guitar in its case and use it during battles. After his confrontation with Masamichi, his guitar is broken into pieces.

Overall Skill: As the principal of Kyoto Jujutsu High, Gakuganji is a strong jujutsu sorcerer, managing to defeat a grade 1 sorcerer like his fellow principal Masamichi Yaga with the aid of another sorcerer. Sound Amplifier: Gakuganji's technique uses his body as a sound amplification device, amplifying the melodies he plays on his electric guitar and launching it in waves of cursed energy.

Gakuganji is a staunch traditionalist who pushed for Yuji Itadori's execution. He views Satoru Gojo as irritating and destructive, with Gojo's own antagonism fueling their conflict. When it became obvious Gojo would delay the process, he proved to be scheming and deceptive, using the Goodwill Event as an opportunity to assassinate the boy, and both curses and his own students as tools.[3][4] In spite of all this, Yoshinobu does not hate Yuji personally.

He feels making exceptions from long standing rules is wrong, especially when dealing with something as dangerous as the resurrection of Sukuna.[5] Furthermore, he was quick to intervene when the Goodwill Event was attacked and cooperated with Gojo, stating that the safety of his students was the priority rather than defeating their enemy. He is also able to quickly analyze and grade his opponent's skill level with a glance. However, after the death of Masamichi Yaga, Gakuganji was filled with sorrow. He believed Yaga's death to be pointless, especially seeing as Yaga told him how to create abrupt-mutation cursed corpses right before his death.[6] He believed he should've been cursed by his fellow sorcerers, and wondered why it wasn't the case. Nonetheless, he carried the secret of how to create the cursed corpses with him without telling the higher-ups, a fact that shocked Gojo. As such, Gojo believed that with Jujutsu Headquarters in the hands of Gakuganji, and the other higher-ups killed by his hand, there wouldn't be much to worry about even if he died in his battle with Sukuna

Yoshinobu is an elderly man with an elongated, bald head. He has huge, thick, light colored eyebrows that curve down at the edge of his face, and a light colored goatee. Yoshinobu also wears multiple piercings, such as a nose ring, two piercings on his lower lips, three piercings on each of his upper ears, and one on each of his large earlobes.

Yoshinobu sports a light colored nagajuban over a dark colored shirt with light colored letters on it, a dark hakama, light colored tabi, and a zori. In addition, Yoshinobu uses a wooden cane to walk around with. When in combat, he carries a suitcase that contains his guitar.