Hazure Skill no Tsuihou Ouji, Fushigi na Dungeon de Mugen Seichou (Associated Names)

Henry, born in a royal family without skills, is given territory on the border. It’s a grassland full of monsters,, with no people, no resources, and no hope. Disheartened, Henry wanders the grasslands and falls underground through a hole. However, the moment he touches a stone monument there, words echo in his mind. It is…