This is a side story of Log Horizon.
A story about Soujirou Seta "exmember of Tea Time Party and his guildmate (West Wind Brigade) in a world of MMORPG.
By its eleventh expansion pack, the massively multiplayer online role-playing game (MMORPG) Elder Tale (???????? Erud? Teiru?) has become a global success, with a user base of millions of players. However, during the release of its twelfth expansion pack: Novasphere Pioneers (???????
??? N?asufia no Kaikon?, alt. Homesteading the Noosphere), thirty thousand Japanese gamers who are all logged on at the time of the update, suddenly find themselves transported into the virtual game world and donning their in-game avatars. In the midst of the event, a socially awkward gamer named Shiroe, along with his friends, Naotsugu and Akatsuki, decide to team up so that they may face this world, which unfortunately has now become their reality, along with the challenges and obstacles ahead of them