Genjutsu is the ability to cast illusions on someone or something , from illusions ranging from walks in the park to walking through hell ,Instead of physically touching the opponent the user manipulates the flow of chakra in the opponents brain , Creating a disturbance in there 5 senses making there opponent believe that the illusion is real.
There are many ways to trigger genjutsu , Sound,Eye contact, Taste ( idk about taste though lol)
Ways to release from a genjutsu are Doujutsu , Pain , and full body surges I believe that's all the ways o_o
also like to add genjustu can be induced in layers also :bouncy: done