Genjutsu: Ketsuryūgan

By activating their Ketsuryūgan, the user locks their opponent within a genjutsu for one of various purposes. They can brainwash them into mindless drones with a set order to follow, or trap them into a dream-like state; those affected by the former gain glowing red irises. For more defensive means, this technique can create a powerful barrier against mind reading, protecting information from being acquired. Only another equally powerful dōjutsu-user can break through and repel this mental trap.