Satoru Gojo is a sorcerer in the anime series Jujutsu Kaisen and serves as a teacher at Jujutsu High. He is characterized by his formidable power, gentle demeanor, and mysterious past. Gojo is a playful individual with a mischievous smile and a strong sense of justice, often making light of dire situations with humor. He has a unique ability called 'Limitless' which allows him to manipulate infinity, and he is also known for his cursed technique 'Six Eyes,' which enhances his perception and power beyond normal sorcerers. He often plays the role of a mentor to main character Yuji Itadori and values his students greatly, though he frequently challenges their abilities and perspectives. Gojo has a complex relationship with other characters, especially Geto, his childhood friend who became an enemy, and the sorcerers of the higher-ups, balancing a familial rapport with a strategic distance. His personal mantra to 'live comfortably' and 'never be useless' underlines his philosophy of embracing freedom and self-improvement, a stark contrast to his mentor, Suguru Geto, who chose a darker path.

Kazuma Kiryu is the main protagonist of the Yakuza series. With a formidable presence, Kiryu is known as the Dragon of Dojima, a moniker earned from his immense physical strength and capacity for ferocious combat. Despite his rough exterior, Kiryu carries a strong sense of justice, protectiveness, and loyalty, often found defending the weak against exploitation and bullying. He has a profound respect for family, valuing his adoptive father Shimano's guidance and cherishing his surrogate family, the Tojo Clan. He is also a master of numerous combat styles and has a unique ability to shift into a fighting stance known as the Beast Style. His preference for drinking, playing mahjong, and a casual life in the hostess clubs contrasts with his chaotic history in the yakuza. Kiryu's most intense relationships include his complicated love interest, Reina, and the persistent rivalries and friendships with figures like Goro Majima. His primary opponents stem from internal conflicts within the yakuza and his past actions, which he constantly seeks to atone for.