Nearing Hades's Cathedral, Tenma suddenly finds himself standing before his village, seemingly undamaged. He can't shake the feeling something is wrong as Alone and Sasha - who appear as their children selves - tell him everything up until now has been a dream - the truth, however, is the other way round. Carrying out Hypnos's orders, the dream gods trapped Tenma, Yato, Yuzuriha, and Sisyphos in dream prisons; deep inside their realm - the Dream World.
—AniDB.net