Hole Up Gamers

In the near future, the full-dive VR game Visions has taken Japan by storm. However, a flaw in the game leads to a series of fatal accidents involving players who remain logged in for extended periods. To halt the game, an attempt is made to force all players to log out, but a group of players rebel and barricade themselves within the game world. To evict these players and bring them back to reality, Kokoro Hato—a protagonist belonging to the Regional Welfare Department's Hikikomori Support Office—ventures into the world of Visions to make contact, but...?

(Source: Kadokawa, translated)