Sleep of the Eternal Moth

Sleep of the Eternal Moth is the twenty-fourth episode of the Log Horizon 2 anime and is the third episode of the Noosphere arc. It first aired in March 21, 2015.

It corresponds with the fourth chapter of Homesteading the Noosphere, although the episode was adapted based on notes given to the animation team by Mamare Touno; the volume was not yet written at the time production started on the season.

Synopsis
Landers are falling asleep on the streets of Akihabara, Susukino, and Minami. Eyewitnesses report that Eternal Moth monsters are responsible. Their shining wings rain down and knock people into a state of sleep by draining their magic points.

The Log Horizon junior members are all thinking about whether to go home and about the Landers' fate. It's a tough decision, but they don't want to leave their friends or the Landers behind.

Later that night, countless Eternal Moth monsters rain down on Akihabara and Susukino. Not only that, unknown creatures start attacking Minami. To make matters worse, now the Adventurers are getting knock into a state of sleep. The Round Table deduce that it's an attack from outside the zone.

The West Wind Brigade soon discover the moths' nest in a new raid zone called "Calling Fortress" in the Shibuya broadcast building. In the meantime, the Round Table develops a device to capture the moth. Furthermore, they believe that the monsters had been drawn to the broadcasting antenna from the Moon. To prevent damages, it would be best to destroy the antenna.

Even though, Shiroe is uncertain about raiding the broadcasting building his still puts forth a raid team and makes the difficult choice of destroying the antenna.

The raiding party fights their way through Shibuya and enter the raid zone in the broadcast building. However, Shiroe's incertitude is impeding his strategic insight. As a result, there's a lot of communication between the members, which allows the monsters to overwhelm them from all angles. Leading to many casualties. Consequently, they're left with no choice but to retreat, forcing them to make a hasty retreat.

Shiroe calls out to everyone, but before he can say anything, Henrietta walks up to him and slaps him across the face.

Minori and the other Log Horizon junior members drive away Shiroe's uncertainty about returning home when they all decide to stay and help the people of Elder Tale.

Outside, Woodstock W is flying above the broadcast building and spots the raid boss, called Taliktan. He informs the raiding party about his finding.

With Shiroe's resolve restored, he formulates a new plan to save Elder Tale and the antenna.