Ew I hate VBW downplaying Fucken Danzo to Town level and I mean they aren't the best at scaling or abilities for Naruto but I'm glad they got FTL back, if only they could get planetary back cuz it's the most consistent thing for the God Tiers.
But yeah Kotoamatsukami isn't an illusion, it's one of the strongest mind haxs in Naruto, you don't need to be unaware lol
What it does is place you under a Genjutsu where you are fully under the command of the caster, they give you an order and you follow it without knowing it as if it's what you want, you act the same but you will follow this order no matter what.
It was so powerful that it took control over Edo Itachi who was under complete control by Kabuto so it overpowered something similar, and Itachi couldn't stop and talk to Sasuke which he wanted cuz of the order to protect the Leaf Village which meant to stop the Edo army, so he had to talk with Sasuke as they fought. Also Itachi knew he was under it cuz he saw the crow and explained it to Naruto now he set it up but it still works so just knowing you're under it won't stop it from working.
Also Danzo only used Izanagi which doesn't make a clone, it is a Genjutsu that you cast on yourself to rewrite your fate it's fate Manipulation and arguably Subjective Reality on yourself cuz you are making any damage fictional not effecting you and changing your fate.
Kratos' soul summon time tear his soul apart then drain his life force and magic which could work yet it's iffy if it can work on Chakra But Chakra is made of spiritual energy so they have some level of resistance and protection yet like the Human path of the Rinnegan that could work especially if Kratos has a clone teleport over to do it right away.
But taking the chakra won't stop the Izanagi especially since he keeps it active in anticipation while in battle So it's iffy
But that is a possible Win con for Kratos, along with using time Stop then age Danzo to death yet Izanagi would counter that so it's a weaker win con.
With the Eyes Of Truth he Can counter and see through illusions, the Furries for an example The furies illusions from GOW were so powerful they could warp reality as a whole and make their illusions real and tangible. Not to mention their pocket reality manipulation which eyes of truth counters. Definitely not out of the picture for it to counter subjective reality.
But it would not work on Izanagi due to it not being casted on Kratos and it being not exactly the same especially with the factors of possible fate and subjective reality haxs used on the caster.
Also, Ascension Kratos should have resistance to Mind Manip since Tisiphone could drain the sanity of hundreds of men at once with her mind manipulation.
But Kratos has to use it and without it he doesn't have much mind haxs resistances so Kotoamatsukami would still work.
Not to mention the Sharingan has multi step precognition so he could see Kratos try to kill him and go straight for the Genjutsu or kill, plus when rewrites his death he can place himself behind Kratos for a cheap shot surprise stab to the heart.
Now with the blades of Chaos Kratos Could Win too cuz they attack on a spiritual and conceptual level which Danzo has no conceptual protection but it isn't a one shot unless he destroys danzo completely so it's iffy cuz Danzo could rewrite his death before he's completely burned away.
So far win cons for Kratos are Time stop & aging to death combo, countering his mind haxs and killing him, using a clone or himself to drain Danzo of his life force and magic hoping to drain his chakra to maybe stop Izanagi, conceptual burning him away, or out lasting him till he runs out of eyes and dies.
The main issues with these win cons are they depend if Kratos would use them right off the bat in character, if some of them would even work, and if Danzo doesn't go for the win right away.
Danzo's win cons are just staying alive till he gets the chance to kill Kratos, using his Izanagi to surprise kill Kratos, Kotoamatsukami to make Kratos kill himself, and such.
The issues with the surprise kill is that he'd have to go straight for a fatal blow which is iffy, izanagi might not work if he's burned by conceptual flames, letting the fight drag on goes into Kratos' favor so that's a bad idea like what he did with Sasuke tho that happened cuz he didn't have Koto, now it is in character to use Kotoamatsukami he overuses it even on people who didn't need it in the series, and it's in character for him to keep izanagi active waiting just in case he is killed so the first hit won't work even if he's off guard.
So if the fight drags on or Kratos uses all his abilities right away then he could win but I'd give to to Danzo for less questionable win cons and is more in character to go straight for the win.
I vote Danzō Shimura for the Win.