I'm the Villain Who Captured the Heroine—Now What?!

Reborn as a doomed cannon fodder villain, I'm handed one simple job: guard the weakened heroine locked in our dungeon. Easy, right? Wrong. The hero is already storming the gates, my boss is screaming his last breath, and that 'dangerous aura' everyone warned me about? It's real. The heroine's captured, the hero's coming for blood, and I'm the disposable villain standing between them. Do I fight? Flee? Negotiate? Someone help—this is urgent!