The Villain Became Yandere After Being Forced to Love Me

Dressed as a vicious female supporting character who was about to be torn into pieces by a world-destroying villain, the system forced me to use sweet pet points to stay alive. I fed the poison as a tonic and flirted with the dead end as love talk. As a result, the sinister young man looked at me more and more wrongly - until he pinched my waist and pressed it against the corner, his voice was hoarse and hot: "Run away after flirting? Who taught you the rules?"