Isaac and Iselus

Isaac and Iselus is the twenty-third episode of the Log Horizon 2 anime and is the second episode in the Noosphere arc. It first aired March 14, 2015.

Synopsis
Roderick informs Shiroe that a lunar communication would cost an astronomical amount of money to build. On top of that, Roderic isn't even sure whether the device would actually work. Even though Shiroe is disappointed, Akatsuki tells him not to worry about it, or he'll get old man wrinkles.

Elsewhere Touya and the Log Horizon junior members discuss whether they want to return to their own reality. Some want to stay while others want to go home to see their family.

Back in Maihama, Isaac doesn't fail to notice that the city is turning into Akihabara. However, Iselus points out that it's good that the Landers are absorbing the Adventurers' culture and developing their own. While walking around the market, Isaac gets the feeling that they're being followed.

Afterward, Lord Sergiatte summons Isaac and explains that he intends to announce Iselus as the next heir to the Cowen family, even though he has a son. However, he doesn't have Cowen blood. Furthermore, Iselus, older sisters, wouldn't be suitable for the job, leaving only the young boy.

As a result, Sergiatte asks Isaac to continue watching over young Iselus. Calasin discusses the growing tensions between Westelande and Eastal with Isaac.

The following day, Maihama hosts a banquet for Prince Iselus. While Sergiatte is confident that his grandson would be a great ruler, he still expresses his regret for making him bear such enormous responsibility.

Later that night, a guest presents Iselus with a fruit juice from the guests' land. Before the prince can take a drink, Isaac stops him warning him about assassinations. It seems the guests are actually Westelande Landers who want to assassinate Prince Iselus. Luckily, Isaac, with support from Calasin and Rezarick, manage to protect the young boy from harm.

Regan visits Shiroe and relays his latest findings. On top of that, he tells them that while investigating the gates, he detected a faint signal from the Shibuya broadcast building.

Suddenly, Touya bursts in and inform them that people are mysteriously collapsing all over Maihama and Akihabara. To make matters worse, a black cloud showers Akihabara with strange spores.