Jujutsu Kaisen Manga Chapter 73
In Jujutsu Kaisen manga chapter 73, Toji Fushiguro sneaks into Tokyo Jujutsu High. Because he has no cursed energy at all, no one can sense him. Most sorcerers detect enemies by feeling cursed energy, but Toji can move around without being noticed, especially while everyone is distracted.
Toji explains that when he carries cursed weapons, people can sense him because the weapons have cursed energy. Even so, he is still extremely good at hiding himself.
When Suguru Geto attacks him with the powerful Rainbow Dragon curse, Toji easily dodges it. Toji then reveals that he trained his body and senses instead of cursed energy. Because of this, he can naturally sense curses and track them, making him very dangerous even to top-level sorcerers.
