Restricted Tsukuyomi

The Restricted Tsukuyomi is a powerful genjutsu which is cast from the third eye of a Rinnegan user.

Overview
The user casts the genjutsu with their third eye, causing this eye to emit a powerful light. Anyone who sees this light is then trapped within the realm of the genjutsu. Using the principles of the Izanagi, the world inside the genjutsu is just as real as the material world, meaning any injuries suffered while under the genjutsu also transfer to the victim's material body.

Additionally, the user completely commands the genjutsu world they've created, essentially allowing them to rewrite "reality" and change the settings to make the illusion more in their own favor. Those caught within the Restricted Tsukuyomi cannot move their physical bodies—which remain stationary in the material world—unless the genjutsu is somehow broken.

Countering
Though one of the most powerful genjutsu, the are methods of countering the Restricted Tsukuyomi.
 * If the victim is blind, and therefore cannot see the light, they cannot be caught within the genjutsu.
 * If the victim naturally possess the Rinnegan (meaning they have not undergone a transplant), said Rinnegan can break the illusionary world, at great personal strain to the victim.
 * A perfect Susanoo is capable of blocking out the light. It should be noted, however, that activating Susanoo once the target has already seen the light is futile, as upon first seeing the light, the target is captured within the genjutsu.

Drawbacks
As a genjutsu, this technique has few weaknesses. Among these few, however, is the fact that the caster can also sustain damage in the genjutsu world, causing fatal wounds to have irreversible repercussions on a user who is uncareful.

Trivia

 * According to Ryun Uchiha, this technique is simply the Infinite Tsukuyomi on a smaller scale. Lacking the, the technique has a limited range.