I Became The Mastermind Who Betrays The Heroines

Synopsis

I possessed by the villain who betrays everyone in the final act. I wasn't particularly interested in the destruction of the world, so I was leisurely waiting for the ending, but... "You're the only one who fully appreciated my boa constrictor drawing, Young Master." "If I promise to meet you at 4 o'clock, my heart starts racing from 3... Is this what it means to be tamed?" Strangely, the heroines keep showing interest in me.