Anko3773: Public Execution
There's a House-yu Marisa crying in a jam jar. It was caught by the Miss who lived in the room when it foolishly went to sleep on the rug, and right now it is suffering in pain from the toothpick pierced into it.
A bunch of other house-yus come to its rescue, but Miss was lying in wait, and cripples them one by one by piercing their feet. She proceeds to torture them, looking at the shelves where she knows there's probably more hiding. When the leader of the rescue group asks why she's doing this, she informs them that it's because they committed the crime of intruding into her place.
Finally the largest House-yu Marisa appears, after she crushes the rescue leader. She tells it to gather all the house-yus and get out, or she'll kill them all. As an example, she hits the Jar Marisa with a spray. The Marisa's body starts to twitch around like crazy, making insane noises, and its skin reddens, then turns purple. After jumping around furiously for a bit, it freezes up and keels over.
The sight of this shocks the elder, and it calls every other house-yu out. After confirming that it has gathered everyone, and that there are no eggs, she tells them to get into another bottle, after which she would release them outside. The elder Marisa gets stabbed in her mamumamu by a searing pin before joining the rest.
Then Miss pulls her dick move. She fills up the bottle with water, telling them she would release them outside... after they melted. The trashing of the Reimus impede the Marisas from getting onto their hats. Miss leaves to buy stuff.
After she comes back, she sees that they have all melted, and takes the bottle out to dump its contents into the pond of a nearby park. Then she returns home and starts putting the anti-house-yu things she bought into place. She enjoys abyusing, but it's better to keep her house clean instead.