Niflheim's Forthcoming

The user using their water-nature chakra causes a thick mist to be formed around them, which envelops them and their opponent. This mist upon being inhaled by their lungs puts the target(s) under an illusion. The illusion also completely cuts off their sense of somatosensory system, as they are simultaneously tormented with visions of the past. This illusion forces the target to witness their darkest moments; no matter how deeply buried such a memory is, this genjutsu is sure to bring that up to the surface and constantly torment them with it. The targets cannot be snapped out of this technique as long as they are within the boundaries of the mist.

Trivia

 * In principal, this technique is quite similar to Hiding in Mist Technique, although, with added illusionary effect.