my fault, I meant Zukkoku or however you spell it. Thought atsugai was his katon for a second. Anyways, he Izanagi's away from it and Kakuzu doesn't really know anything apart from Danzo being active, meaning he's alive.
But why would he turn on the Domu if he can deliver a killing blow instead?
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Instead of using domu he would begin impaling Danzo with threads that he can spawn from any point in his body (notice how they spawned from the chest in the scan) Kakuzu's been able to react to ambushes multiple times before. Besides its common for a shinobi to check all directions when losing sight of your opponent
And Danzo can't use izanagi to leave such a jutsu? Anyways, KA itself would end this fight, or at least give room for Baku to swallow him before he's out of it, if ever. Izanagi occurs instantly, so he'l probably be behind Kakuzu while Kakuzu is in belief he is about to reach his Futon heart. Nothing suggests he will do a full body domu just for that, and if he does, he will be extremely vulnerable for the seal. Kakuzu doesn't start use his hearts pre-intel gathering, you've even said this on multiple occasions.
@Uchiha Nagashi I disagree. His entire body begins moving when he uses the masks. Nothing implies he can move under the effects of the seal. And as you already stated, with no intel he doesn't start off with the hearts. Baku ends.