Isekai de Uwamae Hanete Ikiteiku: Saisei Mahoutsukai no Yurufuwa Jinzai Haken Seikatsu

A company drone who died from overworking was reincarnated as Sawadi, the third son of a merchant in a different world. His specialty is restoration magic and support magic. He used his cheat skills to come up with a new model of business. He decided to use his restoration magic to cure cheap slaves