Stranger

Stranger is the twenty-second episode of the Log Horizon 2 anime and is the first episode in the Noosphere arc. It first aired March 7, 2015.

Synopsis
Shiroe reads Roe2's letter and learns new information about the world. But also reveals that she's Shiroe little sister.

In town, Nyanta and Serara are at the market when the former notices that the Adventurers have a dark and depressing aura.

Shiroe and Akatsuki pay a visit to the West Wind Brigade and asks about their encounter with Camaysar, the Genius monster.

Once again, Iselus is pestering Isaac. The little boy is eager to know about fighting and the goings in the world—much to Isaac's displeasure.

The Round Table gather and discuss different encounters with three more Genius monsters around the city. One of them was Baglis, who hypnotized Adventurers into buying worthless items and collecting many gold coins from them. Besides the Genius monsters, there are other issues like the poisoning incident caused by Sislau.

After the meeting, Karashin brings Isaac up to speed with the Round Table's latest meeting. At the same time, Nyanta and Shiroe discuss the adventurers who have lost the resolve to continue. However, Nyanta points out – thanks to Serara - that the younger Adventurers are still optimistic about their futures.

The following night, Shiroe lays out his hypothesis about what's happening in the world to the senior Log Horizon members. Besides, he tells them what Roe2 wrote in the letter. In it, Roe2 explains that she's an artificial being (Traveler) created by an alien race that was sent to search other universes for a resource called "Empathiom".

However, she also warns them of the Genius monsters who will obtain Empathiom at any cost. Shiroe decides to trust Roe2 words when she explains that her companions on the Moon may help the Adventurers to return to their own reality.

Roe2's Letter
After arriving from their trip, Touya, Minori, Serara, Isuzu and Rudy report to Shiroe and hand him Roe2's letter.