So we got no idea how Danzo handled it and took shishi's eye by force.
But I think its just a normal genjutsu with just a different approach/function. The thing why this technique is dangerous is because the target doesn't get to know that he is under a genjutsu. Other than that I think if the opponent is also know how to deal with genjutsu and wont let their guard down then this technique wont matter.
Thats what I think otherwise people like Madara, Hashirama etc wont stand a chance against Shisui, so this must be the weakness of the technique.
But I think its just a normal genjutsu with just a different approach/function. The thing why this technique is dangerous is because the target doesn't get to know that he is under a genjutsu. Other than that I think if the opponent is also know how to deal with genjutsu and wont let their guard down then this technique wont matter.
Thats what I think otherwise people like Madara, Hashirama etc wont stand a chance against Shisui, so this must be the weakness of the technique.