Demonic Illusion: Tailored Destruction

As the name describes, it is an powerful and psychologically damaging genjutsu that Akai created from the basis of Genjutsu. By manipulating her sharingan and collecting info through mind reading, she can "tailor" the illusion to what frightens and scares the opponent most. This means that the specific illusion never stays the same, as no two people have the exact same fear.