Finally got to play DDC, with my left arrow key broken! Remapped keys to IJKL and gave hard a try.
Seija's final was where the attempt ended, not bad for having never seen the game before. Followed it up with a normal 1cc with 5 lives left (both ReimuB), then ReimuA (1 life because I tried capturing everything, but perfect first 3 stages) and SakuyaA (4 lives, perfect normal Seija, 4DNB Sukuna w/ 3 to the survival) before trying the extra stage...which I cleared on the 3rd credit past the opening streaming with ReimuA, 1 life to spare. Pretty fun game, good system , nice and challenging without being in your face impossible (though it might be because I haven't done much with lunatic yet, and because I haven't played much yet) and one of the best extra bosses.
Oh and I captured all the extra cards in 4 tries or less except the final (6 tries, all deaths to note phase) and the survival, which took 16-with all but one failure to <13 seconds left.