Wuh? I'm confused.<br/><br/>Shiro can't see Tashi, yes... so he's going off of touch to determine if someone's trying to mess with the Guard's body or not. If you did something like perform a ninjutsu technique infront of him, he wouldn't see it and could not make an AoO. But if you rustled her body or actually ran into him and touched him, he would get an AoO. Same as you'd get if he tried to move around in the smoke and ended up bumping into you.<br/><br/>For the concealment, I'm just going off what the pdf says.<div class="quoteheader"><div class="topslice_quote">Quote</div></div><blockquote class="bbc_standard_quote">The smoke obscures all sight, including the darkvision ability.<br/>Any creature within the area has total concealment (attacks suffer a 50% miss chance, and<br/>the attacker can’t use sight to locate the target).</blockquote><div class="quotefooter"><div class="botslice_quote"></div></div><br/>Having been in the cloud of military-grade smoke grenades, I can tell you that it isn't too crazy to say you can't see five feet in front of your face. :P Although, generally... if there's any wind at all the cloud will only start to form a few feet<em>away</em>from the grenade.