Kotoamatsukami is the most disappointing genjutsu of them all, especially since it was hyped to be the "ultimate genjutsu".
It is the only genjutsu that can be broken simply by being aware of it. You can be aware that you are in Tsukuyomi or even in a normal sharingan genjutsu, yet you still have to overpower thorugh it in order to break free. However, the first time it was used on screen, as soon as Mifune was aware that he is being controlled, he instantly broke free from it. The second time Kotoamatsukami was used, Itachi used it on himself willingly, so of course it would work.
Not to mention that you have to be creative when using this genjutsu. If you cast it upon your opponent and give him absurd suggestions like trying to make him your slave, the enemy will clearly realise something is off and break from the genjutsu once again, so it is not the overhyped 1 shot jutsu either.
Conclusion: Kotoamatsukami's hype was fake. It can be a good strategical and/or supplementary jutsu, but its combat oriented feats are nonexistent.
It is the only genjutsu that can be broken simply by being aware of it. You can be aware that you are in Tsukuyomi or even in a normal sharingan genjutsu, yet you still have to overpower thorugh it in order to break free. However, the first time it was used on screen, as soon as Mifune was aware that he is being controlled, he instantly broke free from it. The second time Kotoamatsukami was used, Itachi used it on himself willingly, so of course it would work.
Not to mention that you have to be creative when using this genjutsu. If you cast it upon your opponent and give him absurd suggestions like trying to make him your slave, the enemy will clearly realise something is off and break from the genjutsu once again, so it is not the overhyped 1 shot jutsu either.
Conclusion: Kotoamatsukami's hype was fake. It can be a good strategical and/or supplementary jutsu, but its combat oriented feats are nonexistent.