For the looks of it, it was some elder man's house that got invaded and trashed around, you see that the first panel looks like the present situation, while the last 3 panels seems to explain how it happened. And again, we need some serious Justice here, and considering this artist's line of work, we can expect it to happen and in a interesting and even technological way, of course considering the possible crime of murdering or just attacking an elder, i would rather have some slow, traditional and painful method instead.
Considering that you could scare away a yukkuri with a spray bottle full of water. It make me think that the elderly person was already down to begin with. Not that that makes the yukkuri free of wrong doing of course.