The Yuuhi family was started in Konohagakure. The heads of these family were one of the Kurama Clan, and one of the Sarutobi Clan. Although these clans were both very separate, and famed in different areas of jutsu, they were about to give birth to a new breed of shinobi. Since the two lovers could not decide on what name to take, they decided to both change their last names to Yuuhi (lit. 'evening sun'). The first child born to them had an amazing talent for Genjutsu. This child was able to detect Genjutsu and reverse them with ease. His own Genjutsu were also very powerful, and even the pure bred Kurama feared him. As the clan reproduced, each generation's Genjutsu seemed to get stronger and stronger. In present day Konoha, the Yuuhi family remains discreet; most of them not choosing to become ninja. However, those that do become ninja are feared by all for their Genjutsu.
Gen-suru
Illusionary Sense
Members of the Yuuhi family are able to 'sense' a Genjutsu. By making handseals within a Genjutsu, they are able to tell that a Genjutsu is present. This is mostly due to their heightened chakra control, allowing them to feel a disturbance in their own chakra. Once they realize a Genjutsu is present, they will either be able to reverse it; or release it. (This ability is not passive).
Gen-gyaku
Illusion Reversal
There are multiple ways to reverse a Genjutsu, all of which are unique to the Yuuhi family. While reversal of the Genjutsu seems complicated, it is actually rather easy to this family. Naturally, when caught in a Genjutsu; there is a link between the caster's chakra and the victim's chakra. Since the Yuuhi are able to detect this link, and know how it works; they are able to successfully negate the effects of the Genjutsu.
Trigger Reversal: If certain handseals are made before a Genjutsu is triggered, or while it's being triggered, the Yuuhi can use the opponent's trigger against them. For example, if the Genjutsu in use is triggered by touch; as long as the Yuuhi had successfully handsealed, the attacker's own sense of touch to the reverser will trigger the Yuuhi's own reversal or Genjutsu. This method does not work for the sense of taste.
Triggering a Genjutsu While Captured in a Genjutsu: If the member of the Yuuhi family is unable to reverse the trigger of a Genjutsu; they can reverse it while inside of said jutsu. If the member of the Yuuhi family is ensnared within a Genjutsu and are able to make eye contact, physical contact, or contact the senses of taste, smell, or hearing; they can reverse a Genjutsu. Since they are already inside of a Genjutsu; they cannot use their own jutsu - rather they will use the environment that the original Genjutsu presents against the caster; not being as potent as a full blown Genjutsu however.
Methods of Reversal
反転の方法
The Yuuhi member has a few options when reversing a Genjutsu.
Body Merging allows the Yuuhi to merge with a binding or an oncoming attack. When merged with a binding, their bodies can either slip out of the binding or they can completely turn into the object used to bind them. They can then act as the binding and attack the caster (as seen with the beanstalk in the Kurama arc). If they merge with an oncoming attack, they can either let it pass through them or turn into the attack and redirect it.
Replacement with another object is another form of reversal. Much like Flower Petal Escape and Flower Petal Dissolve, the Yuuhi can replace with any object of their choice. The replacement can then be used to conceal one's self, release the Genjutsu, and escape (Flower Petal Escape); or they can use the replacement to attack the caster (Flower Petal Dissolve).
Signature Techniques
Yuuhi Genjutsu
Demonic Illusion; Tree Binding Death (ツリー結合死, Magen; Jubaku Satsu): Jubaku Satsu is a technique utilized by the Yuuhi. After forming the needed hand seals, the ninja will disappear and approach their target. Once near the target, a tree will grow at their feet and its branches will bind them so they can no longer move. Once the illusion makes them believe they are captured, the ninja will appear from the tree itself and stab his target with a kunai. This technique is also used to capture multiple ninja at once. Once the trigger is made, this being the sight of handseals and the disappearing, any extra ninja will feel sand creeping up their feet. This will then bind them and keep them from interfering with the Yuuhi's main target.
Flower Petal Escape (花の花びらを免れる, Hanakaben Nigeru): This unnamed flower petal technique is a Genjutsu utilized by the Yuuhi. If the ninja comes under attack, he can use this technique to cover his escape. After forming the needed hand seals, the Yuuhi's body will disperse into a shower of flower petals. These petals will confuse and distract her opponent while he escapes or hides.
Flower Petal Dissolve (花の花びらを解散, Hanakaben Tokeru): This unnamed flower petal technique is a Genjutsu utilized by the Yuuhi. If they become trapped in a Genjutsu or want to appear to be trapped, then ninja can disperse into a shower of flower petals. With this technique these petals will fly around and consume the Yuuhi's targets, dissolving their bodies away.