Talk:Low-Level Sword Training Campaign/@comment-74.15.149.144-20151218174709/@comment-26878424-20151218180558

Boss node drops are a 100% gurantee when your team gets S or A rank in victory.

I believe for ranks B the chance just gets lower, and rank C and defeat is no drop. The only exception of a rank C drop is on map 6-3, though the changes are quite slim.