Responses

it's bc they are drawn as a background characters, you really need to squint your eyes to be able to notice them. i can't really provided you the exact chapters since i don't remember it that well too but iirc, you can try to look them up on tumblr? since there's someone who took a screenshot of them and posted it there
there's so many parallels in the latest chapter with the ori! mairuma and one that I particularly like is when ifrit recalled the face alice made when he's about to pull the trigger (iirc, that face is the same face he made during his evil cycles) and the way ifrit repeatedly said "it a waste," in the same way the fought 1v1 during the heartbreaker event with alice.
also, kiriwo, oh the man you are ლ(´ڡ`ლ) i never did like you when you first appeared, but then you had to be the most unhinged villain in ori! mairuma. and wth is that yakuza tattoo?? i'm on my knees when i saw him. he's so fine.
anyway, nishi only provided us spoilers about character backgrounds for iruma and his gang (opera, alice, etc) so i assumed once the artist had completely draw those spoilers, they would just end the series without getting too involved with the six-fingers, but the latest chapter said otherwise. if they're going to continue this series, i would hope the misfit would come together (maybe iruma would unite the misfits since apparently, they are in this story but in different places like jazz in the slum, and garp and agares working under kamu-kamu family)
also, i've been hearing theories that alice might be (or can turn into) a girl. can anyone tell me what was that thing that looks like chest binding he wore in his patient uniform??? iruma has bandage wrapped around his stomach and it clearly looked like a bandage instead of whatever it is on alice.