D240: Sub-30 in 22.XX seconds with Vaan (OSB), Ashe (Glint/BSSB), OK (LMR/BSSB), Larsa (BSSB), LD Vayne (LMR/OSB).
D280: First team got destroyed by back to back Incubus Darkjas at 99%. Forgot you could get rewards for % completion on the lower difficulties as well. Tried again, could only get to 89%. Tried again with LD TGC (LMR/OSB), Ashe, Penelo (BSSB1), Larsa and Vayne and managed to master, but it took 47.55 seconds.
I then Swapped out TGC for Basch (no SB), managed to sub-40 the D280 (39.60, super close). I think that's it for now. I did manage a run where I skipped the magic paling, but unfortunately, Zodiark's turn order went Incubus Darkja (Phase 3) -> Faith -> (Phase 4) -> Incubus Darkja (Phase 5) than wiped me out. I also had nothing left offensively in the tank at that point except Ashe BSSB was online, and it was already past 30 seconds anyway.
Guess I won't be getting those 30 extra rubies any time soon (not planning to pull on XII tomorrow, though maybe I should, since this realm is soooooo bad for me). I guess it's not too bad, since I have 460 rubies right now and the extra 30 wouldn't enable me to make a third 6* ability. I should be able to make up the difference with VII Torment since I should be able to beat that one completely.... I hope.
D???: Doesn't exist.