Okay for the skeptic!Apo AU, I've now thinking about how you'd get through to them that the supernatural is in fact real.
It's her proximity that messes up the supernatural stuff, right? (Which I love btw) (She doesn't have an anti-magic shield because she's a sceptic, she's a sceptic because she has an anti-magic shield! It's brilliant and I adore it) Because there are definitely some very fun scenarios where you simply can't deny that something weird is going on
So picture this: Abolish is sent out to deal with a thing that ended up in the archive room of the university library— goodness knows how, but it needs to be gone like yesterday. Only issue, it's a very temperamental chest that comes with shadow claws. Wonderful.
And because Abolish is kinda preoccupied with making sure no one wanders in (it's after hours, but not inaccessible and this is all a bit close for his comfort), just a split second of distraction as he hears steps are enough to get his skin ripped open. His reflexes luckily aren't entirely gone, so his left arm bears the brunt of the damage, but this is really fucking annoying and not great all around, because the claws are still there and it's a little harder to sort out his wards with an arm practically incapacitated. And also the steps are approaching and— wait, they're familiar.
So Apo rounds the corner and the chest slams shut and Abolish just. laughs. Because of course. Of course."
And Apo is kinda freaking out like 'Oh shit blood' and ''What the fuck happened to you??'. Abolish is like "I'm fine. Ish. Just do me a favour— take a look at all my wounds and remember where they aren't". Apo stares in utter astonishment, but they oblige because... it's kinda hard to not listen to Abolish. Also, he sounds really calm, so (Is that bad? She doesn't know).
"Okay, now walk around that corner, pause for a bit, and then come back". Apo's concern rises, but again they oblige and they don't quite know why. They walk out of the room and wait for a few seconds. Then Abolish hisses in what sounds like pain and she darts back in despite herself, and—
What the fuck. Those are new. Those are definitely new gashes all the way down his right arm and they definitely weren't there before. What the fuck.
Also I just saw the post about the Abolish Possession Event (tm) so bonus points if it's after that and there's all that discomfort simmering under this entire interaction :D
Maybe Abolish kinda snaps back into 'oh shit I'm supposed to be avoiding them' and 'it's pointless to try and convince them what the fuck am I doing??'. It's so easy to forget and cave when he's around her, and the pain and blood loss aren't helping— Abolish is cursing that chest and his own idiocy more and more. He's really starting to slip.
So he just fully withdraws, throws the walls that he didn't even notice he lowered back up as high as he can, and is like "Sorry for bothering you, I'll now be leaving with this box" (just probably in less words).
And Apo obviously is like "Dude no??? You're like. bleeding out?? What the hell??"
And then cue conversation as she drives him home/to the Organisation (though I'm not sure how he convinces her not to go straight to the hospital) that is either:
a. Productive and realisation-bringing (yay!!)
or b. Incredibly tense and short, and they spend most of the ride in silence. Which is vastly more likely considering that Abolish has clammed up, and also really good. Because the seed of doubt has been planted now...
ooooooooooooooo I'm attached to Apo never believing but I do really love this.
Abolish is holding a spiky chest and scraped his arm on it, there's nothing supernatural about that! He's clearly struggling to carry it, that thing has sharp edges, it makes sense that it'd cut him open. But Abolish actively harming himself to insist that the supernatural is real is really out of character. He's on her side warning the others about the dangers of tetanus! He just also gives them "holy water" and reminds them to carry crucifixes.
She will take him to the hospital, and he sits there with a thousand yard stare worrying about the box in the back seat of the car managing to kill someone walking past until Apo sighs and gets it so he can see it's in one place. He's not doing good! She's going to help, even if she's mad at him, because that's just the decent thing to do?? Why is he acting confused at her not leaving him in the library at midnight with a bleeding arm?