 I thought I'd blast through Journey to try to collect as many diamonds as quickly as possible (because we have both the Hell event and Chaos Showdown, which I know I wont finish either one. I'll be lucky to get a full suit from both), but then 9-9 (it's the one with THREE themes) came and literally ruined it all. If I finish that level exactly I'd have 92 quests for Maiden and Princess(an achievement) and be a few levels away from 116 A/S ratings on Maiden and Princess as well as 1 side quest away for a Maiden and Princess achievement. Sigh..  I'd get over 100 diamonds from those achievements alone. 

.. luckily I had a little over enough to do the temporary lucky cat event though.

Edit: I do know that some special seek request can be bypassed with very good outfits. I managed to beat it with what I already had that matched Momo's reminders and a post from u/emmygurl09 's cheat (link in the comments for anyone who needs to pass 9-9). I actually got S rating for both maiden and princess. Slightly upset though that I've wasted 3 days and so much stamina and gold just to not use Assassin's Faith anyways.