Yuki Tsukumo is a special-grade sorcerer in the Jujutsu Kaisen universe. Her cursed technique is called Star Rage, which allows her to add imaginary mass to herself and her shikigami, Garuda. Yuki can imbue virtual mass into herself, which is so great that it cannot be quantified semantically or pragmatically. This virtual mass allows her to increase her force and hit harder. Yukis technique has three parts: imbuing virtual mass into herself, imbuing virtual mass into her shikigami, and imbuing virtual mass into her martial arts techniques. Her technique is so powerful that it can defy logic and would be equally effective against high-level curses. Yukis technique is also anti-hax, which means that cursed techniques that rely on targeting the opponent will not be able to recognize Yuki while her technique is active. Yukis cursed technique is mass, which can create a black hole if the density of her technique had no limit.