Gengoroh Tagame (1964- ) is a prolific gay Japanese manga artist. Tagame is considered to be one of the pioneers of the Bara Genre as his works feature very masculine and muscled men chock-full of Male Gaze in stark contrast to the typical willowy yaoi aesthetic. The content of his adult manga can be very dark as well as containing fetish material such as sadomasochism and sexual assault. He is seen as the Japanese analog to Tom of Finland, who illustrates men in a similar aesthetic.
In recent years, his profile has increased due to overseas attention, particularly in America. Tagame had his first non-pornographic all-ages work drawn and published, My Brother's Husband in 2014, which got critical acclaim and a Live-Action Adaptation in 2018.
The list of his works is lengthy and has been collected at The Other Wiki here.