[Yandere] [Cage] [Double Yandere] The yandere sister forced the normal Qingmei to become a yandere. After the college entrance examination, the last guessing game was rock, paper, scissors. The female protagonist confessed her love to the male protagonist in Rock, Scissors, and Brie, but the male protagonist was too straight and didn't know the girl's intention, so he missed it, but they met again in the end. During their college days, there were rumors that each other was in love with each other. In fact, those two were brother and sister.