Wait, so.. he had a debt with his wife. So his plan about it was... blackmail him for bogus compensation money? I don't understand the plot, or why all these people act like they're from another planet.
It's a bit complex. Originally the whole series was collected in 13 tankoubons, but the raws are taken from a Kazenban edition with more chapters and extras per volume collected in only 9 tanks.
But it's essentially the same chapters.
One day, when there's a hundred episodes or something, I'll reread the whole thing and I'll enjoy these little side stories. But now they're just cutting the action.