A possible concise summary is:
You are a boy who is reborn after dying in a car accident. You decide to break up with your cheating girlfriend Mu Yuwei and change your life. You reconnect with your game friend Qi Luoli, who gave you hundreds of skins before you uninstalled the game. You suspect that Qi Luoli is a girl and ask your sister for advice on how to test him.
Here are the key facts extracted from the text:
1. The text is a summary of a video about a love story between two online gamers.
2. The protagonist, Bai Shinan, was in a miserable relationship with Mu Yuwei, who cheated on him with a male star.
3. Bai Shinan died in a car accident and was reborn to his high school days, where he rejected Mu Yuwei's confession.
4. Bai Shinan reconnected with his game friend, 36D Long-Legged Lolita, who turned out to be a girl named Qi Luoli.
5. Bai Shinan and Qi Luoli became closer and exchanged contact information.