Before We Met

Cheng is a positive girl, who always shows the bright side in front of others, people do not know that she is secretly planning for something. Although she is acting very normal, she is in fact counting down her life; but she is afraid that people around her would get hurt because of her death, so she is wondering if there is a way to deal with this situation. One day, she discovers a way to erase memories, so she is trying to work this out to protect the people around her and herself from being hurt.
(Source: cmlab.fss.um.edu.mo)