Modern AU where Doppio keeps diaries that keep disappearing (read: Diavolo keeps destroying them bc he's paranoid that they're a security risk) up until he's writing about how he has a crush on his Boss (read: Diavolo is like 'we share the same damn body I don't think we can fuck conventionally-' but holy fuck he feels the same)
Also out of boredom Doppio adds enough stickers that there's no disernible theme. Diavolo nearly blinds himself because Doppio added a fuckton of glittery/reflective/iridescent stickers to one page.