By the Grace of the Gods (Manga) 06

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?! A plot of land from a kind acquaintance, construction labor courtesy of his multitalented pack of slimes...and opening day is at hand! As it turns out, a little help from his friends—slimy and otherwise—goes a long way to making Ryoma's dream a reality!

Volume 6 of the By the Grace of the Gods manga series by Roy.