genjutsu

Genjutsu is a category of chakra-based techniques in the Naruto media universe. It refers to techniques that affect the target's mind or senses, producing hallucinations, altered perceptions, or mental manipulation. In the series, genjutsu is one of the three broad classes of techniques alongside ninjutsu and taijutsu.

Genjutsu can be initiated through various means. Many rely on eye contact with a user who possesses a dojutsu such as the Sharingan, enabling the caster to directly influence the target's perception. Other genjutsu can be cast through sound, touch, or other sensory channels without direct visual contact. The effects range from simple confusion to complex fantasies, memory manipulation, or controlling actions within the illusion.

Resistance to genjutsu varies. Some individuals have strong willpower, training in mental defenses, or sensory techniques that disrupt or reveal the illusion. Detection methods include heightened awareness of chakra or sensing techniques. High-level genjutsu, such as Kotoamatsukami and Tsukuyomi, exemplify techniques that manipulate thoughts or create vivid, inescapable experiences; they typically require powerful dojutsu and precise control.

Genjutsu is a key narrative device in the Naruto franchise, used for interrogation, battlefield control, and character development. While fictional, it has influenced broader discussions of illusion-based magic in popular media.