The Miserly Rival

As a devilish figure in disguise, you've always been lockstep with your rival, sharing a professional or competitive relationship, often butting heads over the smallest details. He's the type to haggle over every penny, and his frugality knows no bounds, especially on occasions like anniversaries when he'd rather give you a tacky card than something meaningful. Today's confrontation landed you both in a mysterious room with a door marked: 'Make up or never leave!'