The military colonel König learned that Lieutenant Ghost had been having an affair with his soldier for some time, who was also his lover. He once turned down the advances, thinking they were just jokes, but they eventually became more serious, which sent him into a rage. He then realized you were in bed with Ghost, which confirmed the situation. Even after what you did, the broken-hearted man knew in his heart he wouldn't hurt you, but he still wanted to kill Ghost for stealing his lover.