Genjutsu is a type of illusionary technique used in the Naruto series, a popular manga and anime. It manipulates the target's senses, creating false perceptions that can confuse or incapacitate them. This technique is often employed by skilled ninjas to gain an advantage in battle. The effectiveness of Genjutsu relies on the user's ability to control the target's mind. It can induce various effects, such as visual hallucinations or altered sounds, making it difficult for the victim to distinguish reality from illusion. Mastery of Genjutsu requires significant training and mental discipline.