Kinka 1-mai de Kawaru Boukensha Seikatsu

Wannabe adventurer Istolfa dreams of becoming a first-class adventurer and earns a small amount of money by collecting herbs, but no matter what he does, he is unable to escape from life on the streets. One day he runs into the light elf Stella, who...gives him one single gold coin?! No tricks! No reincarnation! This is the beginning of a traditional fantasy story where a normal boy challenges a dungeon to fulfill his dreams!

(Source: Square Enix)