The real world arc kicks off into high gear with revelation that all the children are victims of gaslighting in episode 29 "Return to Highton View Terrace", JP title "Mammon, the Great Clash at Hikarigaoka!", DVD title "The First Battle in Japan".

Along the way: the digimon cannot stay silent no matter what, Joe panics to explain where they found them, Matt and TK are horrible people, Mimi immediately abandons the group for her other friends, Tai is assaulted by their school teacher, Myotismon struggles with the fact that he is a goddamn vampire, Mammothmon picks a fight with one specific dude on a moped, the kids remember they all saw a dinosaur fight a giant parrot a few years back but it kinda slipped their mind,  the eighth child must have seen it too, and Tai conveniently forgets that his little sister saw the whole thing.