Qianren Zhanzheng

Love is a war. A war where no blood is shed, but can leave you countless scars. An ugly girl who was cheated on receives a mysterious phone call one day. The caller says that she is the 35-year-old herself from the future- she wants to teach her the art of love! Now she is on the road to become a better version of herself, take revenge on her ex, and reclaim everything she once had!

(Source: Copin Comics)