By the Grace of the Gods 07 (Manga)

Slime's up for one recently deceased middle-aged businessman! When the gods reincarnate him in another world as a boy with magical powers, he discovers that magically-tamed slime are an untapped natural resource!

In his past life on Earth, Ryoma worked himself to the bone as an employee of an exploitative company. Now, in Seilfall, the former office drone decides to start a business of his own?! 
 
Now that he's surrounded by tamed slimes and trustworthy staff, it's smooth sailing for Ryoma's business venture! Discovering new kinds of slimes and practicing taming magic with the Duke's family are only the start of the good times in store for Ryoma.Roy is the author of the By the Grace of the Gods original light novel series.

Ranran is the artist of the By the Grace of the Gods light novel manga adaptation.