Can someone give an idea of ​​the appropriate heading in my story?

Synopsis:
After the accident, Chanyeol has lost his parents. He has changed. No more thugs at school. It is not easy to accept them all. Chairman of the new gangsters, Kai revenge by bullying Chanyeol from disappointment. He was disappointed with Chanyeol changing. However, Chanyeol disappear within 2 weeks. He saved a girl named Hyejin with shabbily dressed, pale and wounds. Hyejin allow Chanyeol in his apartment without fear. However, Hyejin friend at school still does not accept the fact.

Sorry for my wrong grammar/typos