Yuki Tsukumo is a character in Jujutsu Kaisen. She is one of the four special grade sorcerers of Jujutsu Society. Most people view her as lazy and carefree because she rarely goes on missions. Truth be told, she has issues with the Jujutsu Society's approach. Her research and beliefs aim to prevent curses from manifesting in the first place rather than exorcising them after they appear—focusing on the big picture rather than the short-term results