Ryoma enjoys a peaceful life in the forest with an array of helpful slimes — until he encounters a group of armed men tending to one of their wounded.
Reinhart brings his family to meet Ryoma. His daughter Eliaria is fascinated by the slimes and asks Ryoma to teach her how to tame one of her own.
Arriving in the town of Gimul, Ryoma visits the local church and reunites with some divine friends who tell him about other transferees from Earth.
With the slimes' help, Ryoma finishes his first guild job in mere hours. Later, he takes on another cleaning task and learns of possible exploitation.
After Ryoma shows Eliaria how to play with magic, Camil teaches Ryoma how to attack with it. The next day, they head to the mine for combat training.
Ryoma and his adventurer companions go into the mines to hunt monsters. When they come across a swarm of cave bats, Ryoma asks to try an experiment.
Ryoma decides to leave the care of the Reinhart family and become independent. He goes to Serge at the Morgan Trading Company with a business idea.
As Ryoma prepares an opening event for his laundry service, twin siblings from the Morgan Trading Company arrive to assist him in the new business.
With business booming, Ryoma decides to hire more help. At the Merchant's Guild, he meets two prospects from a foreign land but notices something odd.
Accepting an order to make waterproof fabrics, Ryoma heads into the mines with Eliaria. As they wait for the cloths to dry, Ryoma fulfills a promise.
The duke and his family give Ryoma and Eliaria a lesson in taming magic and also explain the surprising number and power of their own familiars.
Aware that they must say goodbye soon, Eliaria and Ryoma await the limour birds. When the birds descend on the lake, Eliaria begins playing a melody.