Itadori's Grandfather is an elderly, bedridden man. He has short, white hair, and many similar facial features to Yuji.
Itadori's Grandfather is shown to be a selfless, caring man who taught Yuji to help others.
Introduction Arc Edit
From very early on in Jujutsu Kaisen, it is shown that Yuji and his grandfather care for eachother greatly. During his final hours Yuji visits him, where he proceeds to attempt to reveal something about Yuji's parents. Itadori refuses to hear what he has to say, telling him to "stop acting cool". Before passing, he tells Itadori that he is a "strong kid" and to help people whenever he can. He goes on to tell Itadori to make sure to be surrounded by others at his time of death, and to not be like him.