Mid but Acceptable

I have reincarnated as a supporting character who gets killed by the male protagonist. My ultimate goal is to connect the heroine with the male protagonist without him going crazy. I decided to tame the male protagonist to avoid fate. But the eyes of the beast looking at me kept changing. "You promised that you will be mine once I turn into a human." His serious attitude and his strong body make my heart tremble. "No, Floria, I shouldn't fall for this. This is just the part of the contract!"