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Genjutsu Guide

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Genjutsu Guide

Post by FD Admin on Wed Jul 27, 2016 4:25 pm


Genjutsu is a category of jutsu with effects that affect the mind rather than the body. Like ninjutsu, genjutsu requires the use of chakra and hand seals, but its main purpose is to cripple the opponent's willpower in order to win.

While there are many genjutsu that freeze an opponent in place, it's important to note that one cannot use this as a method to prevent the opponent from moving so that the caster can move in for the killing blow - maintaining genjutsu, especially stronger ones, requires a lot of concentration, thus keeping the caster occupied during the initial phase of the jutsu.

Categories of Genjutsu

Just like Ninjutsu has categories (elemental, medical, etc), Genjutsu can also be divided into categories: optical illusions, sensory based illusions, and memory based genjutsu.

Optical Illusions

Unlike other types of genjutsu, those in the optical category don’t involve your chakra entering the other’s network. A basic example of this would be the basic clone technique: they are simply refracted light, much like a rainbow, and are very easy to dispel. While they cannot completely cloak existing objects or surroundings, they can change the appearance of things. In addition, if dispelled by a single person, the illusion goes away for others. Though easily dispelled using Kai (pain does not work for these), they can be difficult to detect - especially when it comes to things such as minorly altering the appearance of nearby foliage. However, lower ranked (D/C) optical genjutsu are the easiest to detect and dispel of all genjutsu types. These genjutsu do not require anything special to activate, and have a very high success rate.

Sensory Illusions

The most commonly used type of Genjutsu, sensory illusions are activated by entering the target’s chakra network and causing a disturbance, affecting their senses directly. Following that, these illusions can only affect the following senses:

  • Sight: An example would be creating a vision of a forest around the target.
  • Sound: Affects your sense of hearing. An example would be a constant ringing sound plaguing your target, or completely nullifying their hearing.
  • Touch: Anything that you feel, such as heat, pain, or general body sensation/numbing.
  • Taste: Although not as frequently used, some genjutsu can affect a target’s sense of taste, such as by generating a taste in their mouths to throw off their focus.
  • Smell: Often used in conjunction with sight (creating smells to go along with visuals in order to create a more convincing illusion), but can also be used alone to create distracting scents.
  • Balance: The most common example would be creating a feeling of the world spinning around the target.
  • Kinesthetic: Bodily awareness - feeling and controlling your body. An example of this would be causing a target to lose awareness of a limb.
  • Temporal: Sense of time. Both a difficult and rare type of sensory manipulation, temporal genjutsu tend to either speed up or slow down a target’s perception of time.

The more senses are affected, the more complex/difficult the illusion is to create - but at the same time, more difficult to identify as an illusion. Unlike optical based genjutsu, sensory based genjutsu only affect those that are within the effect upon activation - meaning that anybody who enters a space where a genjutsu was previously activated will not be affected by it. If a sensory genjutsu is single-target, it requires some sort of trigger to activate - these can be sights, sounds, certain objects, or even a specific action (as an example, sharingan users often use their eyes as a trigger, which is why it’s common advice for others never to look directly at a sharingan user’s eyes). If the target’s attention is captured by the trigger, the genjutsu is activated. Area of effect genjutsu do not require a trigger.

While sensory-based genjutsu are in effect, the jutsu user has restricted movement. This is particularly important when genjutsu restrict a target’s movement -- if the target cannot move, neither can the user.

Memory Based Genjutsu

A more rarely used form of genjutsu due to its lack of combat applications, memory based genjutsu can allow the user to enter a target’s memories, and, at high levels, even create false memories. As these techniques require immense focus, and are extremely rare. They often require the user to remain in physical contact with the target to keep the jutsu active.

Genjutsu cannot, under any circumstances, dictate a person’s actions or forcibly create or amplify their emotions. While most people would have emotional responses to certain illusions, you cannot dictate them.


As genjutsu are so different from others types of jutsu, this is a very important detail. The Medium determines exactly what type of genjutsu is being used. The categories are:

Single Target: These are genjutsu that only influence a single person. These tend to be the most potent types of genjutsu as they are concentrated on a single target, and are often the most difficult to notice and thus break free from. For these types of genjutsu, after the chakra has been formed (no hand seals necessary), the user has to catch their target’s attention (through any sense) to trigger the illusion. These triggers should be things that are rather obvious, such as a shout, a bright light, or a strong smell.

Multiple Targets: These techniques are able to affect multiple targets (up to a maximum, dictated on a case-by-case basis). Although they tend to be less potent than single target genjutsu, they can still be quite powerful. These can be dispelled one of two ways: either one person pays the cost for everyone, or each person dispels it themselves. When each person dispels the jutsu for themselves, they pay a fraction of the original technique cost (divided by number of targets) +2. When a single person pays the cost for everyone, that person pays the cost of the original jutsu +2 for each person affected.

Similarly to single target genjutsu, multiple target genjutsu only affect those whose senses have been triggered in some fashion. So, if there are 4 targets but only two notice the trigger, only those two will be affected.

Area of Effect: Affects a specific area. These are usually the easiest to break out of, but can be the most difficult to notice. When creating an AoE (Area of Effect) genjutsu, please specify the size of the area that is affected. Area of Effect Genjutsu require only a single person to dispel. Once this person dispels the Genjutsu, it breaks for everyone else as well.

Genjutsu Focus: These techniques only affect those that experience the specified focus. A focus is an item that is used to attract the attention of the target - these must be items that will attract the attention of the target through a specific sense and cannot be bland or difficult to distinguish (examples include perfumes, special jewelry, bells, or anything of that nature). One well-known example of a genjutsu focus is an Uchiha’s Sharingan eyes.

A single character can only have a set number of focus items at maximum (as dictated by appropriate tiers). Due to the nature of the items, they must be registered items in the user’s inventory, and it must be noted that they are to be used as a genjutsu focus (an exception is given for the sharingan/similar things, which can, by default, be used as a focus and thus grants an additional focus slot).

If the target does not experience the focus, they do not fall under the genjutsu.

Optical: This applies only to Optical category genjutsu. Just like Area of Effect techniques, when one person dispels an optical genjutsu, it is dispelled for everyone. These techniques can only affect the sense of sight, not any of the other senses, since they are purely distortions of light. Specific numeric limits on the ranges of these techniques should be placed to make sure that folks aren’t creating optical illusions from ridiculous distances.

Illusion Capacity

Due to the nature of genjutsu, the types of illusions, as well as how many senses can be affected (for sensory illusions), are limited by technique rank as follows:

D-Rank: 1 Sense | Sight, Sound, Touch, Taste, Smell
C-Rank: 3 Senses | Sight, Sound, Touch, Taste, Smell
B-Rank: 4 Senses | Sight, Sound, Touch, Taste, Smell, Balance
A-Rank: 5 Senses | Sight, Sound, Touch, Taste, Smell, Kinesthetic
S-Rank: 7 Senses | Sight, Sound, Touch, Taste, Smell, Balance, Kinesthetic, Temporal

Applying/Dispelling Genjutsu

When applying a genjutsu, you don’t need to post every exclusive detail of your jutsu unless it successfully activates, but you must write out the conditions for activation (to clarify, you would have to, for example, write about a certain sound that must be noticed for your genjutsu to activate). Whether the genjutsu successfully activates or not is left up to the target, but members are expected to be logical. If the user has a very large or loud focus item, the chances of a target not experiencing it are low - do not try to weasel your way out of getting caught in a jutsu if it doesn’t make sense for you to avoid it.

If a genjutsu is successful, you still don’t need to disclose every last detail -- but you should at least provide the category, medium/affected senses, and chakra cost - the target needs to know how much chakra is required to dispel the genjutsu, after all, and they can’t adhere to conditions they aren’t aware of.

On the flip side, when you’ve been caught in a genjutsu, you must first determine that you’re in one (this deduction must make logical sense - not all genjutsu is easy to detect), and then you must apply any of the appropriate methods to dispel it. The methods for dispelling genjutsu are through pain, Kai, or by receiving help from others (NPCs cannot help you unless they are played by another person on an NPC-specific account).

Genjutsu Resistance

It is possible to be resistant to certain Genjutsu, but never to become fully immune to Genjutsu. The only possible way to become fully immune to Genjutsu would be to lack all of one’s senses, which would not only be ridiculously impractical and irrational, but it would make a character pretty much useless. One can be resistant to Genjutsu by lacking a sense (blindness, deafness) or by using a machine that, at the cost of a chakra upkeep, enhances the wearer’s perception of specific types of Genjutsu (a single sense). These devices have to be approved and then implanted by a medical ninja.

As an example, a device that increases your perception of optical/visually based genjutsu might look something like this:


Another method for gaining Genjutsu resistance is via Doujutsu or Kekkei Genkai. For example, Byakugan users are able to see chakra, and thus see the disturbances and thus resist them. However, the ability to resist Genjutsu must make logical sense, and must be covered in-depth. Simply having a passive genjutsu resistance on an advanced element clan would not make sense and would thus not be approved (See the Doujutsu guide for more information).

Custom Genjutsu Creation

As genjutsu are more complex than other jutsu types, the template is longer and requires more detail.

Name: What is the jutsu called? You aren’t required to use a japanese name, but if you do, please include an english variant as well.
Rank: Self-explanatory - please see the Jutsu Guide for details.
Type: Genjutsu
Medium: See above. One medium per jutsu. If multiple targets are possible, specify a maximum.
Duration: How long your genjutsu lasts. This is either a number of posts, or is reliant on something else (e.g. It’s active as long as you’re playing a flute or as long as you remain in physical contact with someone). In the case of memory altering techniques, this can sometimes be hard to determine as the altered memories can last for years. Keep in mind that you have to pay an upkeep cost for a lasting illusion.
Hand Seals: See the Jutsu Guide for details. Only necessary if your jutsu doesn’t have a focus or activation trigger.
Range: See the Jutsu Guide for details. Range for genjutsu can also be qualitative values such as line of sight, hearing range, eye contact, etc.
Restrictions: Are there any restrictions for this jutsu’s use?
Description: Describe the jutsu thoroughly: How is the genjutsu initiated? What does it do? What toll does it have on the user (movement restrictions, etc)? What senses does it affect (if any)? Be as thorough as possible here.
Chakra Cost: See the Jutsu Guide for details.

[b]Hand Seals:[/b]
[b]Chakra Cost:[/b]


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