Ok, someone needs to explain me how this territorial thing work for the yukkuris. One have a house, then another one come and say "this is my house now" and the first one just leave? I guess I never seen a yukkuri fighting to defend his/her/IT's place.
If you look at the couple who got kicked out they're pretty bruised and dirty which means they probably lost the fight for their home.
Really? There's quite a few stories with yukurris getting beat up for their houses. I think the Selfish Mother series by z-aki is one of them. The Marisa in the cardboard box fights off the intruding Deibu by slamming into it [only to be squashed later once it turns it's back on it].