Crescent Moon Alliance

The Crescent Moon Alliance ("Crescent Moon League" in Yen Press' translation) is a small guild on the Yamato server, led by Marielle, the "Sunflower of Akiba." While it is a relatively small guild, several of its members play major roles in the story.

After the joint efforts of Crescent Moon and Log Horizon frees the kids in Hamelin from the guild's despotic rule, many of them joined the Crescent Moon Alliance, nearly tripling the guild's size.

Overview
At the start of the series, the Crescent Moon Alliance is a small guild with fewer than 30 members (only 19 were online at the time of the Catastrophe). The level of the guild's members is also low—only four players are level 90, and over half of the remaining members are below level 50. By the 5th volume of the Light Novel, the guild's membership had grown to 65 members. Despite its small size, the guild is a member of the Round Table Alliance. Crescent Moon Alliance is seen to be a guild for training low-level players (e.g. the summer training camp at Choushi Town) and a sister guild of Log Horizon due to frequency of interactions.

Guild Hall
At the beginning of the series, the Crescent Moon Alliance occupies a seven-room "B Class" Guild Hall in the main guild building in Akiba. This seven-room hall is divided into four general rooms, a workshop, a storehouse, and a meeting room. Marielle describes the hall as "user-friendly."

As the security situation in Akiba deteriorates after the Catastrophe, the Crescent Moon Alliance's guild hall—under the watchful care of the guild's leaders—remains a secure refuge for its fellow members.

The hall is wood-paneled and has the warm, comfortable atmosphere of a family home. Decorations include stuffed animals, beige-lace curtains, and a huge tapestry with the image of a dog.

One of the rooms is the Guild Master's official office (執務室). However, the only thing about the room that earns it that title is the large desk piled with papers. Otherwise, the room is coordinated in pastel colors as though it's Marielle's private domain.

In the light novel, Marielle remarks that the monthly upkeep cost for the seven-room guild hall is 80 gold coins.