Tokyo Dungeon Sphere

is a Japanese light novel series written by Akigo Nasaka, with illustrations by Kaito Shibano. The series began publication on January 10, 2017 by ASCII Media Works under their Dengeki Bunko publishing imprint.

Synopsis
The latest VR technology goes out of control, and the world in the user's brain becomes a dungeon! Chifeng Guangda joined the "Adventurer's Guild" to capture the dungeon with a light feeling, aiming for high salary and various benefits. However, in the dungeon that rushed in immediately after joining the army, I could not understand right or left, and I had a hard time realizing the weapon and I was late.

The party consists of Aokura, who manipulates a longsword and ice, Sakurashiro, who uses a spirit with a cane, and Green, who masters a sniper rifle. Akamine, who has been nominated as a leader and is trying to capture with members who have some serious circumstances, cooperates with his friends to uncover the secrets of the dungeon!