KMST 1.2.484 - Master Piece, Bosses, etc

I know they were added in the previous version of KMS (1.2.197) but I really didn't have anything to say about them until now. How does one go about obtaining Scarlet Accessories (Earring, Ring, Shouldpad)? In the earrings, I think I finally found a way around having to choose a Set, since it seems Nexon always likes to include Earrings in a Set I'm after (Rising Sun, then Alien Fragment, then Meister, now Inverse).

Also, the additional RA Boss Tickets just reminds me that ours is broken.