Irozu Secret Genjutsu: World of Shards

This is a powerful and secret genjutsu known by the members of the Irozu clan, guardians of the daimyo of the Land of Fire. Otoshi Nagare, a descendant of the Irozu clan, can use this technique to cripple his foes.

After weaving the needed hand signals, the user captures the opponent in a mental field with a touch, eye contact, or making the target hear their voice. Once the target enters the genjutsu, they are thrown into a landscape of trees, grass, and rocks made of pure glass. The target hits the ground and is unable to move. After a few moments, the landscape, including the glass sky, is broken into an innumerable mass of shards that cascade upon the target like an avalanche. Upon the glass crashing upon them, the shards become a raging ocean, tearing and cutting into the opponent relentlessly. Finally, once the target is rendered a bloody mess, the genjutsu ends and the target suffers immense mental fatigue.

This technique requires a good emount of chakra, immense focus, and extreme control. If the user is strong enough, they can survive or dodge the glass shards and make the genjutsu end. Also, if the user has a dōjutsu, they can reverse the genjutsu upon the user and make them suffer instead.