昔取ったきねづかで…と言いながら無双する定食屋のおっさん、実は伝説のダンジョン攻略者, MUKASHI TOTTA KINEDUKA DE... TO IINAGARA MUSOU SURU TEISHOKUYA NO OSSAN, JITSU WA DENSETSU NO DUNGEON KOURYOKU SHA, An Old Man Restaurant Owner Is Unparalleled by Relying on His Old Tricks. It Turns Out, He’s the Legendary Dungeon Conqueror.