High school student Ritsu Shikishima begins to unravel when he hears a strange voice obscured by static, pleading for help. This voice belongs to & mu a beloved pop idol, whose singing begins to have an adverse effect on the world.
Arata of another world called Amawakuni and Arata Hinohara of modern-day Japan switch places. An illusion hides the switch from people of both worlds, and Hinohara and Arata pass as each other.
Succubus princess Astarotte Ygvar, the first princess of the kingdom of Ygvarland, has just reached the age of 10. 10 years old is a special age for a young succubus, as it is when they are traditionally expected to form a male harem.
Zed, a 15-year-old boy who lives in a city called "Calm", is frustrated by his current situation in life; he feels that somewhere out there is a place where he can live more fully. One day, at the invitation of a mysterious wind, he dives into a space-time crevasse, seeking the answers that might be there. Riding on the wind, he is transported to a war-torn world where magic users called "Shard Casters"
A young salaryman who died in an accident was reborn in another world filled with magic and demons. As a baby, he was picked up by the patriot hero "Sage" Merlin Wolford and was given the name Shin.
Nobuyuki Yazawa owns a Kyoto izakaya, whilst Shinobu Senke serves customers. Three months prior to the series' start, Shinobu went to an Inari shrine and prays for the izakaya's success. Inari-sama responds by making the front door open into the old capital city of Aitheria in another world.
Sōta Mizushino is a young high school student and anime fan who dreams of writing his own light novel. While watching the anime adaptation of the mecha light novel Elemental Symphony of Vogelchevalier to look for inspiration, the tablet computer he is watching it on sputters and drags him into the anime's world.
A man named Caiman is searching for his real identity after a transformation by a sorcerer left him with a reptile's head and no memory of his former life. Along with his friend Nikaido, he violently assaults sorcerers in the Hole, with the aim of taking their heads into his mouth.
During the release ofa games twelfth expansion pack: Homesteading the Noosphere, thirty thousand Japanese gamers who are logged on at the time of the update suddenly find themselves transported into the virtual game world and donning their in-game avatars.