Brother, If You Fall in Love Again, I Will Make an Enemy Out of You.

[Book-traveling + system + rescuing the love-brained brother + arch-rival turned boyfriend + younger sister + brother-sister redemption + self-guide to the dank boyfriend] Entering the pseudo-heroine story, I became the cannon fodder sister of the love-minded brother. With just a phone call from the heroine, my brother can sell his kidney. A single tear from the heroine can kill my brother. In the end, he died in the hospital, and I was forced to jump off the building by the loan shark. Bind the "Love Brain Correction System". [Task: Prevent the brother from going out to meet the heroine. Reward: 500,000. I threw his car keys into the toilet with my backhand. "If you dare to go find her, I'll find someone to fall in love with right now." My brother was so angry with me that his blood pressure soared and he hung around me every day. The heroine? I had long forgotten that it was beyond the horizon. The plan is perfect, the only problem is—— The "yellow hair" I randomly picked up on the roadside seemed to be my brother's nemesis. He pressed me against the sink and rubbed the corner of my mouth with his thumb: "Five thousand a day? I don't want it." "I want you to owe me a favor." "The kind that I will never be able to repay in this lifetime."