Maou to Yuusha no Tatakai no Ura de  

Reincarnated into a Game as the Heros Friend, 魔王と勇者の戦いの裏で, Reincarnated Into a Game as the Hero’s Friend: Running the Kingdom Behind the Scenes, Behind the Scene of Heroic Tale..., 魔王と勇者の戦いの裏で ~ゲーム世界に転生したけど友人の勇者が魔王討伐に旅立ったあとの国内お留守番（内政と防衛戦）が俺のお仕事です~, Reincarnated Into a Game as the Hero’s Friend: Running the Kingdom Behind the Scenes

In this tale, we follow the journey of a Japanese man who has been reincarnated into the game "Welner von Zeavert." Despite being born as a noble's son, he does not play a central role in the story. He lacks the necessary skills to join the hero party and clear the main quest. However, his past life experience and high social status give him an advantage in navigating the game world. As Welner becomes acquainted with the game's protagonist, he uses his knowledge of the story to aid him in survival against the demon king army. Unbeknownst to him, his actions have unintentionally altered the course of events in the game world. He has saved lives and influenced outcomes that were not part of the original narrative. This is not a hero's tale; rather, it is a story about the struggles and determination of a young noble as he carves out his own path in this new world.

Maou to Yuusha no Tatakai no Ura de has been published in English as Reincarnated into a Game as the Hero's Friend: Running the Kingdom Behind the Scenes by Seven Seas Entertainment since February 20, 2024.