@ Nintendonut: Congratulations, seriously! Late, but just wanted to confirm that it was the usual credits screen you posted there.
Which I managed to do, because
UFO Lunatic 1CC with Reimu-A!
I swear, I'm so happy right now, so incredibly happy. Incredible finish, the only finish that could have been acceptable after all the time and effort I put into this. When I realized I had actually cleared the game, I started screaming, I seriously couldn't stop. 113 hours spent on Reimu-A, of which I spent maybe 20 on non-Lunatic modes. I could hardly get myself to play because all those losses kind of blew. The run itself wasn't even particularly outstanding, but goddamnit, the finish was the ultimate victory over all my fears and everything else I had to overcome to arrive at the conclusion that there just ain't no cheap tricks around Byakuren's last Spellcard that can actually make use of resources.
Posting a replay later on, right now I just want to catch on with everything I've left behind because I let this one 1CC occupy my mind above everything else. My room needs some cleaning, as do I.
But damn, I'm happy! I have finally beaten Byakuren at the highest difficulty. Been wanting to do that for ages since she's my favourite character and all.