Boku wa Konyaku Haki Nante Shimasenkara ne (Light Novel)

"What? You remembered that you're the antagonist? Because of my infidelity, you'll meet your end? Even if you tell me so with your tears staining your eyes, I'm 10.... Still, to do something like that is quite awful of me, so let's think up a plan together." The story of the villainess and prince fighting against the game while flirting. The protagonist is the prince.