Shura Field: When I Was Attacking the Male Protagonist, I Met Bamboo Horse

Find This Book, 1Vn, There Is a Childhood Sweetheart Named Jiang, Fake System

Was the system created by one of the male protagonists, making her think that she was reborn and pushed off a cliff? Maybe, I can't remember clearly. I read it before and forgot to add it to the bookshelf. I can't find it. Treasures, please help.