Living in a gamelike fantasy world, Satou Suzuki is in no hurry to get back to his "death march" at home. He's content to take in the sights of Seiryuu City, go to a play with his friend Zena, and take care of the five girls in his party. After he discovers one of them was summoned from Japan like him, though, he prepares for a journey to learn more--until another friend is kidnapped by an evil sorcerer!

Programmer Ichirou Suzuki is transported to another world. In a foreign land, he finds that life is an adventure that's sometimes fun, sometimes serious, and full of girls!

RISE AND GRIND! ​Desperate to protect those close to her, Zena approaches Satou with a simple wish: She wants to become stronger. Naturally, Satou agrees to help, and he and his party subject her to training so rigorous the other explorers can hardly believe her growth. Not one to be left behind, however, Karina enrolls herself in their Labyrinth boot camp as well! But they’ll need to be quick about it. Satou is due in the royal capital, and if his luck is anything to go by, it’s only a matter of time before trouble rears its ugly head!

Showdown in Castle Town! Having successfully averted the airship attack, Satou and company arrive safely in the royal capital. There, they are reunited with Nana’s “sisters”—Numbers 1 through 8—and give them the gift of a lifetime. But as is tradition with every trip to the capital, Satou must rub elbows with the aristocracy before he can enjoy his sightseeing. He even receives a surprise visit or two, including a summons from Sir Juleburg of the Eight Swordsman of Shiga! Because no leisurely trip would be complete without a friendly duel…

A SIGHT FOR SORE EYES! ​Having toppled another powerful foe, Satou’s group heads back to Labyrinth City to celebrate their achievements. Upon returning, they’re greeted by two familiar faces—Zena and Karina have come to Celivera! Plans are made to give them a warm welcome, but those get derailed when Zena runs into trouble. Her labyrinth dive takes a turn for the worse when a monster kidnaps her, so Satou rushes to her rescue. Inevitably, he finds much more than he bargained for! It seems a Hero’s work is never done…

After rescuing Muno Barony from disaster, Satou and crew head for dwarf territory and rescue an Oracle priestess from the demons! But for some reason, the attacks just keep coming...

A problem at every twist and turn... At long last, Satou and company have arrived at Labyrinth City Celivera! Eager to uncover its mysteries, they waste no time before registering with the local explorers' guild and securing a base of operations. However, life outside the labyrinth itself is less than ideal. Children are starving in the streets, a noxious miasma plagues the populace, and the circulation of dangerous drugs stirs up chaos within the noble community. Will Satou be able to give succor to this troubled city? Or will trouble find him first...?