Hangyaku seyo! Eiyuu, Tenjite Jashin Kishi

is a Japanese light novel series written by Tomonori Sugihara, with illustrations by Mataro (Vol. 1 - 2) and Yoshimoto (Vol. 3+). The series began publication on July 7, 2017 by ASCII Media Works under their Dengeki Bunko publishing imprint.

Synopsis
The kingdom of Randall, who brought the evil god Cadash down to the world and planned to unify the whole country. But that ambition was hampered by six heroes on the verge of achievement.

After the war, one of the heroes who went to Randall to explore the current situation  Guney. What he saw there was the relentless looting by the victorious nations, the territory devastated by the wolf and selfish post-war treatment, and the suffering people.

Guney, who has helped him without seeing it, inadvertently makes a name for himself as a savior, the Knight of the Black Wolf. It's hard to fight with the surprisingly warm Randall princess and the enemy who once had a blade while hiding their true identity, and the enemy who used to fight side by side?

The story of the hero's reconstruction of the evil god kingdom begins!