Board Thread:Theories and Speculation/@comment-1872728-20200725151448/@comment-32685487-20200730034440

Oro was interested in the source of Jugo's abilties which turned out to be Ryuchi Cave. He then went there and did what he did. He then made the cursed seals, he then applied one to Kimimaro and then the Sound 4. All of that occured before he even lost use of his arms thanks to Hiruzen. YOU apparently have not been reading the manga like you think you have. Go kick rocks.