Go Through Books to Find the Real Prince

[Through the book + three male protagonists + Shura field + easy daily life + sweet pet + system] I am a young and invincible high school girl. On the first day of school, I was accidentally brought into a Mary Sue campus novel by a car accident and became the heroine. At the same time, I also met three male protagonists with outstanding looks. When I was addicted to the beauty of the male protagonists and couldn't extricate myself, the weird system suddenly jumped out and made me choose among the three male protagonists. Find the real male protagonist, find the right one and grant me a wish, find the wrong male protagonist and go dark and destroy the world. Help, no plot, no golden finger. How is this different from drawing a blind box? The cool school bully will only be gentle to you, the domineering school bully will only be considerate to you, and the gentle brother will only be considerate to you. Who can bear this, can't have it all? As the mission progressed and the longer I stayed in the world, the world became weirder and weirder. One day, the male protagonists actually asked me not to believe in the system. Holy shit, how did the male protagonist know the system! But the system suddenly told me that the male protagonists were all fake male protagonists, and asked me to kill all the male protagonists, otherwise I would disappear forever. Disappear? Or disappear forever! One is to kill the male protagonist and survive; the other is to let the male protagonist go and disappear. How should I choose? I really feel like crying without tears. Isn't what I'm wearing a Mary Sue campus novel?