In this manga adaptation of the popular web novel series, an overworked wage slave finds himself transported to a fantasy world where he quickly becomes the strongest sage in the world... thanks to the help of an army of tamed Slimes! Yuji Sano was a normal guy working a soul-sucking nine-to-five job when he suddenly found himself transported to a fantasy world where he restarted his life as a Monster Tamer. After befriending the Slimes, Yuji is quickly able to gain a second character class, ranking up his stats and learning new skills as he encounters one surprise after another. Yuji puts his mining skills to the test when the group he's teamed up with finds a plentiful stock of Mother Earth's Tears. He amazes everyone with his ability to scrounge up far more of the precious resource than ever before, and he is able to make use of the Slimes to carry the incredibly heavy material back to the ship. While en route, however, Proud Wolf begins acting strange. Instead of cowering away from a fight with a Dominus Wolf, Proud Wolf goads him on! What's gotten into the formerly cowardly monster?!