Tsurugi's younger sister, Yuka, inherited the Zenin bloodline strongly and resembles Yuta. She wears a white uniform out of admiration for Yuta. She is terminally ill with a malignant brain tumor and has less than six months to live. Unlike the fragile Yuta, her quick-tempered personality resembles her grandmother, Maki Zenin. As a Ten Shadows Technique user representing Earth, she fights Mahoraga. After summoning the Eight-Handled Sword Divergent Sila Divine General Mahoraga, she hides in the shadows to avoid detection, letting her Mahoraga battle Dabura.

A rare Heavenly Restriction holder who can use Cursed Energy through Cursed Tools, allowing him to use New Shadow Style techniques and Simple Domains. While physically gifted, he does not possess the transcendent physical body of the Toji/Maki level.

Possesses a bright and cheerful personality, but also has a delicate side. Younger sibling: Gross. Like other Simurian Saints, she has a third eye on her forehead, which she hides with a bandage while active on Earth.

Representative of the Lumeru tribe of Simurian refugees, though originally from the Desqunte tribe. He is looked down upon for being part of the pro-coexistence faction that opposes the invasion of Earth. Reticent, gentle, and dislikes fighting. Capable of using Mass-based Murderous Intent, Light Cursed Techniques, and Reverse Cursed Technique.

Appearance: Looks exactly as he did in his youth (immortal state, wearing a hoodie). Personality: Has become passive compared to his past self who actively helped others. Speaks informally to most people. His cheerful side hasn't completely died out, as he often jokes to himself. Abilities: World-class sorcerer. Uses Piercing Blood (maximized, city-destruction scale), Shrine (surpassing Sukuna), and Reverse Cursed Technique with transcendent cursed energy and physical prowess. Estimated to surpass Gojo and Sukuna. Uses Black Flash as his standard strike. His recent whereabouts are mysterious.

Contracted with a duplicated Rika summoned through a ring, a memento of her grandfather Yuta Okkotsu. Rather than a Shikigami, Rika possesses Tsurugi to fight. The current Rika possesses much higher intelligence and self-awareness than the original, perhaps due to the passage of 68 years.