Kizuitara Musou Game no Akuyaku Shougun Datta Ken. Hametsu Route wa Bukkowasu

A man working at a black company[1] indulges in his only joy after returning home: playing the musou game[2] "Brave of Kingdom." Suddenly, a strange screen appears, and he finds himself reincarnated in another world!?
In front of him is Selina, a female lieutenant in military uniform whom he has seen countless times in the game. And upon looking in a mirror what he see is a... muscular, bearded old man? Of all people, he has become the villainous General Zeorg, who is destined to be defeated by the hero! If he continues on like this, this fate awaits him.
However, having survived the "modern hell" of being a corporate slave, he is unfazed by any tough situation! Armed with his gaming knowledge and corporate slave skills, he becomes the invincible General Zeorg and breaks the path to ruin!!