By the Grace of the Gods manga volume 4 features story by Roy with art by Ranran.

Reborn as a boy into a fantastical world, Ryoma has settled into his second chance at life. In fact, he isn't wasting a minute of it! Using the know-how from his past and the skills bestowed on him by the gods, he wows everyone he meets with his diligence and ingenuity. Savvy to the business potential of Ryoma's talents, the duke introduces his young friend to a trusty local merchant, settling the stage for Ryoma's independence! With goods to craft, tests to conduct, and guild quests to complete, Ryoma's new life is a full one!