Marisa grow some proto legs and started to gain fights to the point that she decided to invade a human house, but this image with the box and the big Reimu hitting the miss made me question if this was some new "trend" in the Yukkuris.
Big Reimu is just an illustration on the yukkuri damage insurance policy book. Didn't read the story, but from this page, it seems that Mister would need to get a letter of acknowledgement from the Factory to file his damage claim. He can't do that without sending proof of the offending yukkuri.
So they have insurance for damage caused by yukkuri, but only if you enclose an offending one and send it to the factory? Welp, that means you can't just go full slaughter mode on them then.