Implying it takes longer then seconds do take out IS. Even in a cave it doesn't fill the whole area right away. Sasori's wood so the minute it touches him and begins peeling off his body he'd merely jump back an swiftly IS Storm Mei and all the clones she decides to make. Her mist couldn't even fill a hall way instantly a large cave is going to take some time. IS > Mei's acid mist in terms of speed. So he'll make it before it even reaches chakra strings. The larger IS variants certainly have a big enough shockwave not to mention ISWO does as well. Not that its needed I suppose as he can just straight KO her regardless. She has no counter to IS besides melting of chakra strings which doesn't happen if he merely moves away from the mist at the start unless you can prove the mist fills up a huge cave in an instant then she loses thats really all there is to it mongrel.
Mei's acid mist instantly started melting Sasuke's susanoo
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. The OP gives Mei access to clones which can hasten the process even further to compensate for the cave being larger than the closed space with Mei and Sasuke. IS bullets are blocked by a doton wall. ISWO does oneshot but it doesn't kill Mei instantly and won't be used as Mei will fill the cave with acid mist before this happens. No, Zabuza used hidden mist in an open area with a
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but the
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. Same case when the
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and the
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, the mist remained (
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)(
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).
And Sasori can merely emerge before the lava hits I suppose I was thinking it would melt the puppet then roll down its spherical body.
The lava will cover an
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which will encompass Sasori if he emerges right outside of Hiruko. Though he starts with Sandaime Kazekage so this doesn't really matter.