Lonely Hitman (1989)

Original title: 悲しきヒットマン

There are men in this world who seem to have been born to be a villain. His upbringing, his sexuality, everything about him was suited to being in the criminal world. However, he also had a loving wife and children. This is the story of a man who throws himself into a deadly struggle on the front lines of a huge violent war, while at the same time seeking the happiness of his family as a good husband and father.