Debauchery Tea Party

The Debauchery Tea Party (放蕩者の茶会 Houtou Mono no Chakai, lit. Tea Party of Libertine) was a non-guild group of players in Elder Tale. It was present for two years before they disbanded, but its name is famous even now after the Catastrophe.

Aside from the nine members of the Tea Party that were trapped in the Elder Tale world due to the Catastrophe, the rest of the twenty-seven members come from the Mamare Anthology, a fan book, and were adopted into canon by Mamare.

Overview
Before the events of the Log Horizon series, the Debauchery Tea Party was famous for completing several large-scale battles called raids before the disbandment of the group.

Several personal reasons lead to the indefinite hiatus of the group, including Naotsugu's busy work schedule and Kanami having to move to Europe.

Only 8 members were logged in at the time of the Apocalypse (Shiroe, Naotsugu, Nyanta, Soujiro Seta, Nazuna, K.R., Inctis and Kazuhiko). Since this was counted according to Shiroe's friend list, Kanami was not counted as she's not on the Japanese server (in the anime, K.R. wasn't online when he checked his friend list, meaning that he already was in China by that point).

Purpose
When Elder Tale was just a game, they were known for always charging ahead of others, attempting to be first in the history of the server to complete Raids like "Hades Breath", "Rhadamanthys' Throne", "Nine Great Prisons of the Heilos" and others, even though they had a relatively small group.

Strength
The Debauchery Tea Party consisted of over 27 members, all at level 90 before the group disbanded. The group successfully completed several high-difficulty raids with such a small amount of members that it gained much attention in the server, and its members are known by Adventurers almost throughout the server.

After the group disbanded, some of those who continued playing, like Shiroe, essentially became mercenary players for guilds. It was during this time that Isaac met Shiroe and tried recruiting him into his guild, although Isaac said that he valued Shiroe's playing skills, not for being part of such a famous group.

Trivia

 * Judging by the way it is described, Debauchery Tea Party seems to be inspired by, or at least show striking similarities, to the World of Warcraft guild Exodus. Both were known for their world first achievements, both were among the most powerful guilds during their time, and both disbanded for various reasons.
 * The group was originally just called the "Tea Party". K.R. added "Debauchery" in jest of Kanami's wild tendencies.