Suppose a Kid from the Last Dungeon Boonies Moved to a Starter Town?

Tatoeba Last Dungeon Mae no Mura no Shounen ga Joban no Machi de Kurasu Youna Monogatari (たとえばラストダンジョン前の村の少年が序盤の街で暮らすような物語) is a light novel series by Toshio Satou with illustrations by Nao Watanuki. There is a manga adaption with art by Hajime Fusemachi. The manga is serialized in Gangan Online.