The protagonist is a player of a VRMMOFPS game who ends up falling off the map while playing in PvE mode, and ends up being transported to a fantasy world with his FPS system.Original Manga
From 87 Percent Translation:Reiji Saeki living in the north eastern countryside town lost his life in an accident during summer vacation. .....But before he knew it, a mysterious ball of light exist in front of his eyes in a world of whiteness.
Satoshi Osako was a player of the VRRPG 『Sword and Sorcery』 who defeated the Evil God and died for his troubles. When he awoke again he found himself in a strange unknown forest. Furthermore he possessed his avatar's body and abilities. In other words, he was a cheat.
"Now that I'm back, I won't allow my loved ones to die again!"
The Shadow Labyrinth - the deadliest catastrophe humanity has ever known.