運送屋のおっさんがなぜか副業で絶対無敵剣士を務めることに～さえない人生を送ってた俺が魔王討伐の切り札に？～

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Unsou’ya No Ossan Ga Naze Ka Fukugyou De Zettai Muteki Kenshi O Tsutomeru Koto Ni: Sae Nai Jinsei O Okutteta Ore Ga Maou Toubatsu No Kirifuda Ni?, 運送屋のおっさんがなぜか副業で絶対無敵剣士を務めることに～さえない人生を送ってた俺が魔王討伐の切り札に？～, For Some Reason, a Middle-Aged Man from a Freight Company Ends Up Working as an Invincible Swordsman as a Side Job: I Was Living a Boring Life, but Now I’m the Trump Card to Defeat the Demon King?, Unsou’ya no Ossan ga Naze ka Fukugyou de Zettai Muteki Kenshi wo Tsutomeru Koto ni: Sae Nai Jinsei wo Okutteta Ore ga Maou Toubatsu no Kirifuda ni?