Kinka 1-mai de Kawaru Boukensha Seikatsu

Istolfa is a ruffian—permanently poor, his primary struggles are finding food and a place to sleep at night. One day, while picking weeds in order to try and make money, he comes across a gold-ranked adventurer. The adventurer, surprised at his fortitude, gives him words of encouragement and a single gold coin.

With this single coin, Istolfa's life would permanently change.

(Source: Kuma Translation)