Yokazuki

In the year 2022, the Virtual reality Massive Multiplayer Online Role-Playing Game (VRMMORPG) Sword Art Online (SAO) is released. With the Nerve Gear, a VR Helmet that stimulates the user's five senses via their brain, players can experience and control their in-game characters with their minds.

The suspense horror/dark fantasy story is set in Tokyo, which is haunted by mysterious "ghouls" who are devouring humans. People are gripped by the fear of these ghouls whose identities are masked in mystery.

Devil King Sadao is only one step away from conquering the world when he is beaten by Hero Emilia and forced to drift to the other world: modern-day Tokyo. As "conquering the world" are the only skills the Devil King possesses—and are obviously unnecessary in his new situation—he must work as a freeter to pay for his living expenses!

Haruyuki "Haru" Arita is a short, overweight boy who is constantly bullied at the Umesato Junior High School which results in him having exceptionally low self-esteem. To escape the torment of real life, he logs onto the school's Local Network where he always plays squash by himself, and his innate skills bring him the attention of Kuroyukihime, the school's popular and attractive female Student Council Vice-President.