Hakui no Eiyuu

Kaito Tenchi is a genius researcher of rare talent. One day, he wakes up to find that he has been transported to another world. What Kaito got there was a creation magic that can create everything that he has seen once! Kaito is rescued by Luminous, a female mercenary, and while living with her, he uses his creative magic to earn money by selling high quality fruits, but he gets caught up in various disturbances.

(Source: Futabasha, translated)