[1] His starting point as a literate was the death of a classmate who was his first love in high school.
[1] He specialised in orthopedic surgery, while at the same time writing medical, historical, and biographical novels.
[1] Following the scandal about the first heart transplant operation performed in Japan in 1968, which became known as the "Wada incident", Watanabe left his medical profession and concentrated on writing.
[1] Watanabe wrote more than 50 novels in total, and won awards including the 1970 Naoki Prize for Hikari to kage (lit.
[1][4][5] He gained wide attention with a series of sexually explicit novels, including the 1997 bestseller A Lost Paradise, which was made into a film and a TV miniseries.