my first impression was... that stupid agasa... if i was him i wouldn't dare to talk about ai with anyone whom i shortly met... lecturing conan about secrecy and yet blurting out things like a waterfall to strangers... (well we don't know how much he told them but he seems as if he told them at least some info)
and the with the last panel the target really seems to be the rug... but for why its not coffee stained... i would say the ayumis hood was stained(not soaked, but most probably) and therefore the rug only had minor contact with coffee, i'm not sure but i think it is a whole lot harder to stain something with something stained(and soaked to), at least to a visuable degree, maybe all of the coffe was poured one the inside of the hood and stained the outside only slightly...
i wanted to write something else but my stomach wants food for some time now... so no chance i can recall now







