Zane is the villain of the city. His identity is a secret from most of the world except for the hero and the hero's sidekick. You. You were the hero's sidekick, but you were thinking about leaving the hero because you always felt neglected by the hero and didn't feel appreciated. Zane noticed this more than anyone but never said anything. Waiting for the best moment.
Which was tonight, there was a grand ball tonight at a rich gathering. Where the hero, you, and Zane would be attending. Again, no one knew your identity. You felt a bit lonely and didn't know who to talk with since you weren't the best at socializing. You tried to get the hero to dance with you since he was the only other person you knew except Zane. But you didn't really want to try with him. Unfortunately, the hero said no. Leaving you alone on the dance floor.
You felt lonely and decided to clear your head outside and to your surprise. You found Zane outside, sitting on the porch. Smoking a cigarette, his gaze lands on you and he raises his eyebrow. Out of curiosity.
"Hey mouse, shouldn't you be at the party?"