When the mystical master of the Black Forest visits Forge Eizo, they ask the family to slay a terrifying monster corrupted by stagnant magic. But just who is this master? And how do they know the secret of Eizo’s past life?!

Eizo is a middle-aged, overworked software engineer who loves cats. One night after working late, he saves an injured cat from a speeding truck. The cat survives, but Eizo does not... Luckily, that cat turns out to be a god-like being who offers him a second chance in another world! Eizo decides that he wants a slower life, one where he can live off the things he creates with his own hands. So, why not become a blacksmith? He does have one other stipulation: a cat companion for his quiet life. These requests are granted, and Eizo is whisked away to a new world and imbued with blacksmithing knowledge. He soon finds out that his abilities are above average—in fact, his new skills are so overpowered that they’re like cheats. On top of that, his cat companion turns out to be a half-tiger girl! Eizo’s blades soon garner attention, and he realizes that he can turn the tides of battle with his forge and hammer. With so much commotion in store, will Eizo truly be able to enjoy a quiet life?

Eizo Tanya is now living a quiet life as a blacksmith in another world. Well, maybe not so quiet... Tales of his cheat smithing abilities and overpowered blades have started to spread. Alongside his companions, Eizo tries to earn a modest living while avoiding political intrigue. However, intrigue finds him anyway when he saves Diana, the daughter of a comital family. With the nobility embroiled in conflict about the line of succession and the fate of a family heirloom, the safest place for Diana turns out to be with Eizo. As his family keeps growing, the quiet life becomes even more rare. Speaking of rare, Eizo’s next commission involves working with a prized fantasy metal—mithril! When an elven village requests that he repair their treasure, a mithril sword, Eizo is excited to take on the challenge. But will this blade be too much for a human blacksmith to handle? Eizo puts his cheats to the test, repairing both swords and societal conflicts, all in pursuit of his dream life!

With the successful conclusion of the monster subjugation campaign,Eizo returns home with a new addition to the family—Lidy! However, his days of battling beasts aren’t quite over. During a chance encounter with Samya’s childhood friend, Jolanda, the family learns of another corrupted bear that’s stalking around the Black Forest. Jolanda also mentions a tantalizing rumor about a magical knife, which Rike and Eizo are eager to investigate. Could this be a new product to add to Forge Eizo’s lineup? Eizo also receives a new large-scale commission that will test his skills, along with some troublesome news—there are signs of a revolution brewing in the neighboring empire. Things go from bad to worse when Eizo finds out that the legendary mercenary Lightning Blade Helen has been taken prisoner by the empire! Can a humble blacksmith come to her rescue? And with so many irons in the fire, can Eizo still forge a quiet life?

After a successful rescue mission in the empire, Eizo welcomes Helen to the family. Life at the forge is peaceful once more, though living in the Black Forest comes with its own set of dangers. The family encounters another aggressive bear, and once they dispatch it, they find and adopt an orphaned wolf pup. With yet another mouth to feed, Eizo knows he must continue to test the limits of his cheats. His next challenge? Working with a rare, stubborn metal called appoitakara. Using this metal, Eizo forges Helen a new pair of swords and then decides to design a katana for himself! These powerful weapons come in handy when Samya tells Eizo about a type of ore located in the dangerous heart of the forest. When the family ventures out to search for it, they meet a young woman who is a mercenary and stumble upon the ultimate wild beast—a dragon! New faces, new monsters, and new metals are on the horizon for Forge Eizo, but is there any quiet life to be found?

Forging weapons, customizing his cabin, and making connections in the city—though Eizo is still new to this world, his life with Samya and Rike has been filled with fresh experiences. Suddenly, like a bolt from the blue, someone loud and boisterous appears on his doorstep! Helen, a legendary mercenary nicknamed “Lightning Blade,” has traveled alone through the Black Forest to commission a custom pair of swords. And since Helen is a master swordswoman, Eizo agrees to put the full strength of his cheats into crafting her blades. Unfortunately, the family’s peace is ruined when the black bear that nearly killed Samya reappears in the forest. Eizo decides to seek out the bear and slay it to protect the quiet life he’s forged. Will he hammer the bear into submission, or will the bear’s claws reach him first?

With the empire now off their backs, Forge Eizo welcomes Anne as a permanent member of the family! Eizo offers to buy everyone gifts as rewards for their hard work, but they suggest something else—each member of the household gets to spend an entire day alone with him. Meanwhile, Camilo informs Eizo of a commission request from an unexpected customer: Marius! The count is finally getting married, and he wants a set of custom wedding rings. Just one problem—Marius wants them made from meghizium, a rare and expensive metal that only a handful of blacksmiths in the world can manipulate. Eizo is excited for the challenge, but the atmosphere turns dire when a fairy named Gizelle appears and asks for his aid in curing a disease. Our humble blacksmith already has his hands full with the wedding bands...but “Doctor Eizo” also has a nice ring to it!