Anko3842: Prove Home Declaration, okay!
Anon returns home to find the typical Marisa-Reimu yukkuri family of four in his home, and they tell him to get out since they've already declared his home as theirs. Though they initially think that he, like most humans, are too stupid to know what a home declaration is (a misinterpretation of their Elder's words), Anon tells them that he does know, but asks them to produce proof that they did.
Being yukkuris, they have no idea of the time, nor do they have witnesses, so Anon accuses them of lying. They protest, but without any way to back their words up, they can do nothing as Anon punishes them for being lying scum that intruded into another person's home. He goes easy on them, letting them flee without anything other than pain, but it takes a long time as they are EXTREMELY slow. Anon muses that the real thing is only just starting...
Finally coming to a stop beneath a lamp post, the family decide to return to their previous home in the nearby park to eat and sleep, and possibly gather the clan to punish the geezer. However, they later spot a familiar figure in front of their cardboard box home, and Anon, who had been waiting for them, declares it his home and tells them to get lost.
Anon turns their words back on them, citing the rules of a home declaration, including the Komarisa's words that even a child knew that the rule was unbreakable, making the family scold the child. The yukkuris say that their home has feelings and memories, not realizing that it shows them having double-standards, but Anon keeps going back to the fact that he made the home declaration.
Eventually the Marisa thinks enough to ask him for proof, and for a while they think they got the better of him even as Anon prepares the proof. Their celebration is cut short when Anon shows them pictures of his declaration twenty minutes ago, and even a video of him shouting it out. But they insist that the proof is fake, and the koyukkuris demand he bring out witnesses. Anon obliges by calling out the clan of yukkuris that live in the park.
Back then, Anon reached the park well ahead of the family, and found out where their original home was, as well as buying their help as witnesses with yukkuri food. The Patchouli Elder confirms Anon's declaration, saying that every yukkuri was a witness. The parents accuse the clan of being mean to them, but Patchy says she heard it all from Anon.
By invading a human's home, they have already broken one of her rules. Reimu attempts to weasel out of it by saying she tried to stop Marisa, but Patchy points out if she had, then she wouldn't have followed Marisa all the way to Anon's house. In face of the punishment, Marisa suddenly breaks down and starts screaming like a child, saying that her home and Anon's home are all hers, proof be damned.
The watching yukkuris don't take it too well. A neighboring Alice comes forward and reminds Marisa and Reimu of their scum-like words when they left for Anon's house, which meant that they themselves abandoned their old home. The children immediately scold their parents for that mistake. Anon interrupts by saying that he can't live in the box since it's too small, but proceeds to crush the yukkuris' moment of hope by destroying every last piece of their former home, including the stuff they had inside. The yukkuris try to stop him, but the rest of the clan stand in their way, since it is no longer their house.
Before Anon leaves, he requests that the family not be punished for breaking the Elder's rules, and Patchy agrees, telling the family to be thankful to Anon. Anon taunts them with that, and though they curse him, they can do nothing as he laughs at their plight and leave. He makes up his mind to return the next day to check up on them...
That night, the family is suffering in the cold, without food and only a thin newspaper for cover, since none of the other yukkuris want to let them stay overnight after the fiasco. They hear the nearby family of Chen and Alice being happy, and attempt to do a home declaration there. However, the earlier events of the day have raised Alice's caution, and she successfully interrupts their declaration. They shamelessly beg to be allowed to stay after that failure, but are refused.
The family snaps and attacks; Chen is rammed, while Alice and the child are crushed and eaten. However, Chen survives and rushes off to inform Patchy, who instructs Chen to spread the word of the two taboos that were broken: Killing yukkuris, and cannibalism. Despite it being night, the yukkuris gather and find the family at the scene of the crime with the evidence in plain view.
Anon returns in the morning to check up on the family, and finds them being lynched by the clan as Patchy announces their crimes. Listening in, he surmises the events of last night. Patchy, hearing Marisa insist that she did a home declaration while Chen says otherwise, concludes that what Anon said to her yesterday had been true; the family were LYING yukkuris that never actually did a home declaration. Anon is surprised to hear his lie being accepted as truth.
Even as the family tries to deny it, Patchy gives the order, and the guards stab the family with branches. The Koreimu dies in the first round, with its mother and sister following in the second. Marisa finally dies, insisting that she didn't lie. Having seen it all, Anon takes his leave, with only one thing to say to the family of scum that tried to steal his house.
Serves them right.