(Forcible robbery/double purity/7-year age difference/no female competition, only male competition/the male protagonist is obsessed with love and cannot live without the female protagonist)
They are brothers and sisters, but not related by blood.
Gu Wan couldn't accept that the man she had called her brother for many years would have such thoughts towards her.
He took away her first kiss and destroyed her freedom. He cried because he begged her not to run away. He said he was afraid that before he could find her, he would die because she didn't want him anymore...
(The male protagonist is involved in gangs, and the big crazy guy slowly learns to love. He can't write an introduction. If you are interested, you can read the main text. The ending is HE)