I’ve been trying to capture all the Last Words in Imperishable Night since my last post, and I finally got them all (plus Imperishable Shooting, which isn’t a Last Word but is way harder than Mokou’s actual Last Word, and harder than most/all of the other Last Words). Somehow Wriggle ended up with one of the hardest LWs, and Eirin with one of the easiest. Not sure how that happened, especially since Eirin’s cards in the main game are so hard.
EX-Keine’s took me the longest by far (over 500 tries), but I think Yuyuko’s might be the hardest. Yukari’s also took a while to do even though it took under 100 tries because the spell is just so long and requires a lot of learning. If you already know the first half from PCB, pretty much every attempt takes a minute+ to get to the new part, which is really hard to read/understand if you don’t know the pattern.