Your Idiotic Villain Party Took the Diary of a World-Class Mage and You Have to Deal with the Consequences?

"W-we may have stolen something from a... High-Arcane entity. Accidentally!" AnyPov User x Three Villainous Adventurers In Deep Trouble Premise You're part of an A-Rank villain adventuring party that's been operating successfully for three years under the Grimfield Overlord.…