A ROOM WITH A VIEW...TO A DUNGEON IN ANOTHER WORLD! Suzuki Touru has just scored an amazingly cheap apartment–but the reason it’s so cheap is the front door opens up to a classic fantasy dungeon! Luckily, Touru has always wanted to explore a dungeon. But when he stumbles across Ria, a beautiful blonde knight, he may well have gotten more adventure than he bargained for!

BUILDING A PARTY Touru has scored a super-cheap cheap apartment in Tachikawa, Tokyo—because its front door opens into a classic fantasy dungeon. But the number of roommates keeps increasing. Now a rare white slime and a sexy elf have moved in!! As the first human to ever level up, Touru is planning a safer and easier way to grind more levels by breeding monsters, then defeating them remotely! But things get real as Touru ventures into the dungeon and saves a mage from a fiendish beast!

A stroke of inspiration in the mortal world has Touru and the others rushing back to the dungeon with a hot idea for rebuilding the Thieves' Guild's district. They want to plan a festival! Inspired by the summer festivals of Japan, Touru thinks a dungeon festival will be great advertisement for the Thieves' Guild. But in order to have authentic stalls, the adventurers need to go hunting--for rainbowfish! To make goldfish scoop special, it's time for one last adventure through the dungeon!

An underachiever’s quest for girls and glory at an apartment between worlds! There has to be a catch when a deluxe rental property is this cheap--and this one connects to a perilous dungeon in another world! Far from being dissuaded, Tooru jumps at the chance to sign the lease, hoping to go from high school dropout to big-time adventurer. He soon encounters a stranded knight: a gorgeous young woman named Ria. Tooru rescues her and takes her back to Earth, where she promptly mistakes him for a Great Sage, seeing normal things like running water for evidence of his powerful magic. Tooru may dreams of heroism, but first he has to figure out how to share an apartment with a cute girl from another world!

In a world where mages and monster grow from cultivating mana. Isaac joins the class of humans known as mages who absorb mana to grow more powerful. To become a mage he must bind a mana beast to himself to access and control mana. But when his mana beast is far more human than he expected; Isaac struggles with the budding relationship between the two of them as he prepares to enter his first dungeon.Unfortunately for Isaac, he doesn't have time to ponder the questions of his relationship with Aurora. Because his sleepy town of Locksprings is in for a rude awakening, and he has to decide which side of the war he is going to stand on.Disclaimer: There are adult situations and harem relationships.

Life appears to be improving for Deek and his slaves. Unfortunately, just as he finally puts his problems behind him, he ends up being tossed back into a dungeon filled with ghosts. He's all alone with no companion to protect him. However, when it seems all is lost, a mysterious fairy appears to protect him. Together, can they unravel the secrets of the mysterious dungeon that destroyed old Chalm?

Touru has found an unexpected new ally in the leader of the Thieves' Guild, Miri. With her coming along, Touru's party has grown again. However, despite his accomplishments in the Otherworld, an ominous shadow descends on his real life in Tachikawa. It seems his concerned coworkers have taken it upon themselves to check in on the wellbeing of their colleague, even if it means busting into his apartment to find out! Touru's other life is perilously close to exposure--will he be able to protect his Otherworldly secret?!