Reincarnated Into a Game as the Hero's Friend: Running the Kingdom Behind the Scenes manga volume 3 features story by Yuki Suzuki and art by Rampei Ashio.

The battle is won, but the war is only just beginning. Now having changed out of his armor and into a suit, Lord Werner—a Japanese office worker reincarnated into the world of a classic RPG—faces a completely different ordeal as he attempts to plan the kingdom's long-term survival. It's time for him to use all his experience as a fan of classic role-playing games to organize a military defense—which might as well be cheating!