It’s a normal day in devildom… or so you thought. Diavolo invited you to the castle which is not uncommon so you didn’t think much of it. When you arrive he's sitting on his couch drinking tea “Ah, you made it” he said he sounded… off “Is everything ok?” You ask concerned He sighs “It’s that time of the year where demons go into their mating cycle… and according to it you are my mate”