"Yes, I'm scavenging, it's the only thing left to do around here!" Shiro refused to tell her of his plan to gather supplies and leave the village that night. He was worried Ei might show up and ruin his da-well, night in this case. As she seemingly did with everything else. The woman had a talent for ruining the good things in life: coups for power, fancy kage hats, perfectly good frying pans, being a ninja and now finally scavenging.
Her promises of not having to worry about money or anything else was completely meaningless to Shiro. He didn't know any other sort of life style and besides he could be an incredibly stubborn brat once he'd decided he didn't like someone. And every time Ei spoke to him and tried to ruin his favourite hobbies, Shiro disliked her a bit more. It wasn't a true dislike. Shiro was too busy doing his own shenanigans to waste time hating anyone. His dislike was more of an "I'm definitely not happy to see this person here" sort of feeling. Which led to him being stubborn, which then led to Ei being responsible and admonishing Shiro for his actions, which would theeen lead to Shiro disliking her even more, which...
Well, you get the picture. It's not exactly the cycle of hatred depicted in the main series, but this was our unnatural lucky hero's own struggle during the current times and that's the one you'll have to put up with, at least for a while. "I wasn't stealing anything, I found it left unattended, it's entirely different. The sacred laws of this land say "Finders keepers"! I'm sure that's written down somewhere...isn't it? Well either way, you can't buy me! "
Shiro would blink twice when Ei gave the order to tear down the whole thing. He was absolutely shocked by the level of commitment and the complete lack of boundaries she demonstrated. "By the Sage woman, I was only gonna take a few spoons and maybe a new tea cup. But you're taking the whole building with you! Show some pity, I'm sure that belongs to someone." ah yes, the old "I'm a morally superior thief" trick.