Naoya Zenin

Naoya Zenin is a major antagonist in Jujutsu Kaisen, belonging to the prestigious Zenin Clan (one of the big three sorcerer families). He is the youngest son of the former clan head Naobito Zenin and firmly believes himself to be the rightful heir and next leader of the clan.

He is portrayed as extremely arrogant, egotistical, and condescending, often looking down on others (especially women and those he considers weaker or inferior). His personality reflects the toxic, tradition-bound, and hierarchical culture of the Zenin Clan, and he is widely regarded as one of the series' most unlikable and irredeemable characters due to his overt sexism and superiority complex.

Physically, Naoya is depicted as a tall, slim, and athletic young man (around late 20s) with sharp brown eyes, dyed blonde hair (showing dark roots), and a near-constant smug or arrogant grin on his face.

In terms of power, he is a highly skilled Special Grade 1 jujutsu sorcerer (among the elite even within his powerful clan), head of the Zenin Clan's top unit (the Hei), and inherits the family's Projection Sorcery technique, which allows him exceptional speed and precise, frame-by-frame movement in combat.