My parents vanished, leaving me to become the manager of a student dorm while attending school in Tachikawa, Tokyo.

My transfer made it impossible to make friends. Back at the dorm, it was full of oddballs and weirdos, and there were even rumors of ghosts.

But then, my dorm room turns out to be connected to an otherworldly dungeon?!

In order to climb the class hierarchy, I devise a plan to level up by delving into the dungeon and hunting monsters.

Inside the dungeon, slimes become my pets, and I even encounter female knights and mages--!?

And so, today, the After-School Otherworld Adventure Club begins once more!!!

The first volume of this series will be released by Takeshobo on July 29, 2019.

A manga adaptation is also underway, with Chapter 0 currently available to give readers a taste of the atmosphere!

The method for submitting works that have been decided for book publication and manga adaptation has been confirmed with Hina Project.