In this isekai for dog lovers, an office worker is transported to another world...with his loyal canine companion! Takumi often works overtime and gets home after dark. At least his beloved Maltese puppy, Leo, is always happy to greet him when he returns home. One day, Takumi wakes up in an unfamiliar forest...and right in front of an enormous wolf! Wait, could this gigantic canine actually be his once-little Leo?! With the help of a mysterious new magic power, Takumi will do his best to make a laid back, easy life for himself and his furry best friend!

Ryoma, the boy from another world, takes the opportunity to revisit the Jamil estate, where his fellow merchants Serge and Pioro and a friend's unexpected marriage are all converging. Ryoma's happy to help the young lovebirds-provided he can tear himself away from developing new uses for his slimes and expanding his business! There's more familiar faces and laid-back scenes to come as well, of course, and a stalwart (if dubiously attained...) new ally too!

With the help of the Jamils and volunteers throughout the city, Ryoma’s ventures in city management and defense have come to full fruition—just in time to combat the sinister forces plotting to bring down Gimul. As fires and violent attacks break out across the city, Ryoma jumps into action, but he soon discovers that his enemies are after him personally... Now Ryoma must fight to protect the city of Gimul, along with all his friends!

Ryoma continues to enjoy his extended time in the fishing villages of Fatoma territory, away from his home base in Gimul. As he streamlines his morning hunts of mad salamanders to protect the fishermen at work, Ryoma receives two more special requests from Count Porco, lord of Fatoma, where his culinary ingenuity shines! Can Ryoma accomplish Porco's quests with the help of his evolved slimes, modern knowledge, and experience in this fantasy world? While his slow living comes to fruition, a shocking truth about Ryoma's previous life is revealed...!

Concerned by Gimul's changing social climate, Ryoma resolves to revive the city and eliminate the mastermind behind the city's decline, calling on the full strength of his connections to set in motion a plan that will revolutionize public policy and make the streets of Gimul safe! Meanwhile, the nine gods have a key detail about slime magic to share with Ryoma...