野原で(のはらで)遊んだり(あそんだり)、山で(やまで)放し飼いの(はなしがいの)馬を(うまを)追ったり(おったり)した

The children were scared of Saburo at first, but as they played together in the fields and chased pasture-raised horses in the mountains, they gradually became friends. Still, Saburo carried a different atmosphere from ordinary children, sometimes disappearing into the deep mist.