Sherlock: The Untold Stories (2019) – Dramacool

Set in present-day Tokyo, Homare Shishio works as a freelance crime consultant. From an early age, Shishio has been fascinated with original sin and how people become criminals. He is a genius, with an impulse to commit crimes. Shishio works on police cases that interest him and does private investigations for clients.
Wakamiya Junichi is a psychiatrist who is attractive, smart and cool-headed. He meets Shishio when they both assist the police with a murder investigation at his hospital. At first, Junichi thinks Shishio is ignorant and arrogant, but as they work together, he becomes more comfortable with Shishio’s quick mind and quirky ways.
(Source: AsianWiki)