Childhood Sweetheart: the Yandere Brother's Favorite

(You are young and ignorant and write for fun. Watch Tonic, watch Tonic, watch Tonic. I feel so bad that I can't hide the finished book. I'm in the front row to persuade me to quit. There are so many bad things. I'm sorry, I'd better go to another book to eat something good. QAQ) Childhood sweethearts × two-way crush Meng Jia has an older brother, Xie An, who was born on the same day in the same year. This brother is good at everything, but he doesn't seem to be in good health. When Meng Jia was a child, she liked to drag Xie An up trees, into water, and over walls. She seemed to be holding back her strength and wanted to pull this young man off the altar. Xie An let her do whatever she wanted and did whatever she wanted. It wasn't until one day when Xie An lay half-breathing in her arms that Meng Jia finally panicked and cried: "Brother, please don't sleep, I really want to marry you..." No scumbag men and bitch women, cookie novels, light novels. The female protagonist is a stubborn and stupid girl with a weak body x the male protagonist is delicate and frail, pretending to be a pig and eating a tiger.