Clone!Diluc AU where Diluc creates a clone of him when he's away from Mond, so when he dies the clone can return and fool everyone so they don't worry.
And the real Diluc actually dies.
MMMMMMM
Well, I think Diluc is smarter than people give him to create I don't think he's "create a clone on my own" smart. So you're presenting me an interesting idea to involve Albedo in.
So if you'll let me indulge and continue to infect every Diluc ship tag.
Albedo does not really know the real Diluc but helps him out of curiosity. And well the clone ends up mostly human Albedo can't help but end up feeling a bit of a connection to the clone. Because well he feels like Diluc, but he knows he isn't Diluc and when Diluc returns his job is over.
And Albedo can understand that feeling. And maybe helping someone through the same issues help Albedo himself.