A Demon, an Angel,and their Anchors
Alright, so. Eggchan and Wemmbu, are, of course, always together in everything, the bestest of friends. And everyone knows that Eggchan is Wemmbu's weakness.
And he's also his main anchor to sanity. Without Eggchan, Wemmbu tends to be more unhinged and chaotic, as we all know.
Now, I constantly see "Dead Eggchan" AUs where Wemmbu went crazy and started killing EVERYONE around.
But what if it was also the other way around?
In a AU where Eggchan is an Angel; a Seraphim, an Eldritch creature, whatever: What if Wemmbu is also Eggchan's anchor? Now, in an AU where Eggchan is peaceful, but also a powerful Angel: What if Wemmbu was the one who died? Well, without his anchor, with a reason to NOT be peaceful anymore and no reason to stay so... What if he just.. Snapped?
Bonus: The "Anchor" thing isn't just a metaphor, but an actual mechanic. Wemmbu and Eggchan are often headcannoned as a Demon and an Angel, so what if Demons and/or Angels literally need anchors to keep themselves stable/down-to-earth or whatever?