The adventures of a Demon King who awakens 500 years after his defeat in a futuristic world.

Two unmarried workers at a travel agency hear about a branch office being opened in a distant land to be staffed by single workers, so they decide to marry each other to avoid that fate.

Despite wanting a quiet reborn life, this former college girl levels up to the max as the villainess.

Believing he's the last Ogre survivor of the Orc massacres, Hiiro enters the service of Queen Towa of Raja and tries to lift a curse with Rimuru's help.

Traumatized by a childhood incident with a friend who took exception to his love of traditional dolls, doll-artisan hopeful Wakana Gojou passes his days as a loner, finding solace in a room at his high school.

In an unexpected turn of events, dull high school student Hiro Yuuki obtains the full dive role-playing game Kiwame Quest. Created by the best of technology, the game claims to take "reality to its extremes," from stunning graphics, NPCs' behavior, to the scent of vegetation, and even the sensation of wind brushing against the skin—everything was the result of an ultimate workmanship. Except, the game is a little too realistic and messy to clear. Kiwame Quest features over ten quadrillion flags and reflects the players' real-life physical abilities in the game. Being hit in the game also hurts in real life and slash wounds take days to heal. The only reward here is the sense of accomplishment. Conquer the most stressful game in history that can't be played casually!

In this spinoff series, Rimuru gets his hands on a notebook and decides to compose a record of his many adventures. But where to begin?

On Earth, Haruo and his companions make contact with the indigenous Houtua tribe. To defeat Godzilla, they set out for the old Mechagodzilla facility.