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～ (Associated Names)

A modern Japanese man reincarnated into a game as Welner von Zeavert. Though he reincarnated as a noble’s son, he is neither the main character nor the hero of this world. He become someone who didn’t even appear in the game. Plus, with only [Spearmanship] as his skill, he can’t even join the hero party…