Van, fourth son of a marquis, is just a toddler when he realizes he's been reincarnated. Thanks to his literal lifetime of knowledge, he's raised as a child prodigy--until his production magic manifests, and it's the last thing his snooty mage family wants to see! His disappointed father banishes him to a podunk town on the verge of collapse, yet Van can only see the place's potential. Can our hero's bastion of battlements build a better life than battle magic ever could?!

Van's carefree days of construction are numbered now that the neighboring kingdom has come to conquer. Once considered useless, his production magic arms his country's troops against the invasion! Meanwhile, one of Van's companions is horrified to discover that the enemy has set their sights on her hometown. Does his fellow magical misfit stand a chance against wyverns and explosives with the puppetry skills she so detests?

Expecting a reward for his contribution to the victory over Yelenetta and Shelbia, Van asks the king for priority access to the Central Continent's trade routes--all in the name of procuring rare and delicious foods, of course. What he actually receives instead turns out to be a promotion to viscount and half the land won in the battle! Meanwhile, Panamera has secured a promotion too, and her very own fortress city. Which can only mean one thing--Van must use his magic to spruce up the pla...

With a radiant smile and newfound confidence, Arte continues to deepen her bond with Van, while the villagers join forces and lead Seatoh Village into a remarkable period of development. Van's achievements, however, catch the king's attention, who decides to visit and witness it with his own eyes. Deeply moved, the king asks Van to bring his talents to the royal capital! If this weren't enough of a threat to Van's peaceful life in the countryside, the echo of marching boots quietly draws n...

Van and Arte have little time to enjoy their hard-won peace, as the war with Yelenetta continues and the king calls on Van's genius yet again. Ordered to build temporary fortifications for an army on the move, Van ends up constructing an entire fortress in the middle of the battlefield! But his exploits are making him enemies among the other nobles, who begin to plot against him. Will their jealousy be Van's downfall--or will his newly constructed base hold strong?

Liam has claimed victory by destroying his rival Derrick and winning the hand of the stand-offish Rosetta. Now that he has Rosetta, he's ready to crush her stone cold heart. But before he can act, it appears her icy walls have melted. It's taken him completely off guard! Plus, while he's distracted by personal matters, his past is conspiring against him. Both Derrick's family and a group of pirates are coming for everything Liam has built!

Things look grim for Scuderia as their long-time foe Yelenetta establishes an alliance with the United Nations of Shelbia. Following a tip from some merchants, Van makes his way to the fortress of Centena on the southern border--where he finds none other than his father Marquess Jalpa Fertio, fighting a losing battle against Shelbia! Can Van and his friends turn the tide? And if they save daddy dearest from his plight, can they escape being pressganged into the counterattack that follows?!...

Van leads the villagers in battle against a horde of armored lizards, and thanks to his "useless" production magic, victory is theirs! But just when Van starts enjoying his new lifestyle, more threats emerge, including the local count and a horde of...merpeople?!

With the aid of the fortifications Van erected for them in the heart of enemy territory, Scuderia successfully takes down the Yelenettan border fort! Just to be sure Yelenetta never reclaims their captured outpost, Van decides to transform it into a Japanese-style castle. Problem is, a castle needs a lord--and Van has his own town to take care of. Enter Van's older brother Murcia, freshly exiled by their father just as Van once was! Is this just the lucky break Van needs--or a sign of more...

After devoted mountain climber Kumakichi Kumada falls into a ravine, he wakes up in the middle of a forest in another world…as a polar bear! Now this tough Ursus maritimus is looking after six werewolf sisters on the run from the humans tyrannizing their clan. Keeping his wits about him and using his knowledge from his past life, the next “mountain” for him to climb will be making a comfortable life in the forest for everyone!

Van is hard at work using his past-life knowledge and production magic to enhance his little hamlet in exile. This time around, he's built some beefy ballistae and blasted a forest dragon! Soon the king himself is swinging by for an impromptu royal visit, and a newly discovered dungeon has adventurers flooding in. With all this hustle and bustle revitalizing the village, there's no way things could take a turn for the worse...right?!

Concerned about the progress Van is making with his fortress town, Count Ferdinatto sends his youngest daughter, Arte, and Viscount Panamera as messengers to visit the "child prodigy." Fortunately, Panamera is touched by Van's dedication to his people and proposes an alliance. However, amidst this bright outlook for the future, a new threat descends--a magic beast unlike anything the region has ever seen--and sparks an all-out war!