A friendship that spans thousands of years. The main heroine, Lizhi, was originally an ancient general. However, she became immortal due to an unexpected experiment. However, she becomes blind from May to June every year. This period is called the "lightless period". The aristocratic family she helped called her the "master". During every dark period of Li Zhi, people will be sent to assist Li Zhi's activities. Mu Qingshi was the eldest daughter of the Mu family, and her father left Li Zhi to take care of her. Li Zhi originally didn't care at all, but Mu Qingshi felt that Li Zhi was meaningless and tried every means to make Li Zhi die, but Li Zhi could live forever and could not die no matter what. It is precisely because of her immortality that some people want to use her for experiments. For 2000 years, Riki has been hiding from the pursuit of her ancient descendants. During the time when she was taking care of her, her pursuers still found her. For Riki's sake, Riki stood in front of her when the bayonet was about to be inserted into her chest. Riki was heartbroken. Thousands of years have passed, and today's society has become a civilized society, and Lizhi has also lived for thousands of years. She has witnessed too much, but she is only waiting for one person - Mu Qingshi. Lizhi marked Mu Qingshi's body and will always find her.
Purpose: Cherish friendship and look forward to the future