@janoy yes that's nagc/gcusa/ntreevgc
yes its the same link.
@ryushiro you just have to kill the boss, you can skip the other parts of the dungeon
The drop rate is really low so DO NOT lose hope. You can see on the side of a boss/monster if a mission drop is going to be given, btw you should kill elena(human form) then look if kamiki(monster form) has a little SCROLL ON HER SIDE, like this one here.
its from themasco's post in this thread
if she has a scroll, continue fighting her, if not, press stage cleaner pro and repeat the dungeon.
@fedge
you can press Stage cleaner pro 2 to kill the boss automatically