It's not clear, seems like he was affected for Sukuna's domain, however there are some theories explaining that everything is related to the high commands of sorcerers that wanted to justify Itadori's execution
I'm pretty sure it was sukuna when he was fighting jogo, his attacks were so big it reached inumaki. and thats also why Yuuta wants to kill Yuji as he is Sukunas vessel. (its like for revenge I guess)
this is just what I remember sorry if anything is incorrect.
Oh okay thank youuuu!
Thank youu!!
Who cut inumaki's arm again????? Is it Sukuna????? When he was fighting that monster??????