Better read that on b a t o . to, that's a halfway decent translation. You have to search for "Dear Door" then there is one entry - the 4th in my case - which was last updated some 87hours ago or something, showing Ch.51 as the latest chapter.
I can't put a direct link because mangago won't post it.
Cain and Sid are fighting, then comes a backflash in which Satan manages to get into Sid's consciousness. He turns "off" the demons to have a talk in quiet. He wants Sid to help him defeat Cain and shows him visions of how Cain will die anyway and tells him of how Sid will suffer if Cain keeps fighting against Satan.
He promises Sid that he would safe him. Sid tells him, he'll play along but only for show.
Back to Cain and Sid fighting, Sid's planning something but hell if the author let us know what exactly at any point in the story yet ^^
In the end the "chains" on Jin get severed which happens when the one who put them there gets killed or very badly injured.
Ouhhh, okayy okayy thank youu!!
Can someone please explain wtf was going on in ch 42? I didn't understand shit but I feel like it's something important ┗( T﹏T )┛puhleeezz