Keiji Zero 2019 (Japan), also known as Detective Zero is Japan drama premiere on Jan 10, 2019 on TV Asahi
Rekihiko Tokiya is an excellent detective in Kyoto. While chasing a suspect, Rekihiko Tokiya falls into a water storage pool at an abandoned factory. He wakes up in a hospital room, stunned that he cannot remember anything from the last 20 years. Although he is 51 years old, he cannot recall anything past the age of 31 when he first started working as a detective. He is a divorcee, but he does not remember his ex-wife. His personality also changes, once confident but now meek and timid. His sense of justice is still strong. Rekihiko Tokiya resumes work as a detective, but he deals with cases differently than in the past.