I Regard You as a Brother, but You Are Actually a Woman?

My name is Su Ye. I was originally a top-notch high school student with a photographic memory, but one day I suddenly awakened to a system that can trade other people's lifespans. I originally thought that I was going to start a life of pretentiousness and slap in the face like in Shenhao Wen, but an accident happened. Yan Jin, who has been his good brother for more than ten years, has always been by his side disguised as a boy. After the college entrance examination, Yan Jin became a girl. Not only was she very beautiful, but she also liked herself. But at the same time, his deskmate and school beauty Lin Ling also likes him. In this way, a wonderful love story between a man and two women begins. This book has two female protagonists and a plot of Bai Jia. I've been reading too much sweet love stories lately, and I want to write a stomach-ache love story. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.