HIStory: Obsessed (2017)

The series follows the story of Shao I Chen, a man who dies in an accident involving his boyfriend, Chiang Chin Teng. Shao I Chen is reborn and sent back 9 years. To save his future self he avoids Chiang Chin Teng and avoids his feelings for him. The problem is Shao I Chen has loved Chiang Chin Teng for a long time and has written about him in his diary. While destroying the diary, Chiang Chin Teng discovers a few pages. Causing Chiang Chin Teng to become curious about Shao I Chen. Will he resist the love of the handsome man Chiang Chin Teng and save his future self, or will he fall for the same man twice and risk his life?