Welcome to the N-H-K (2006)

S1E12 Welcome to the Offline Gathering!

During summer break, Tatsuhiro and Hitomi set off for the "Offline Gathering," but it quickly becomes clear that it's not what Tatsuhiro had anticipated. Instead of a typical event, they find themselves on an island surrounded by some unusual individuals. It isn't until later that Tatsuhiro uncovers the true purpose of the gathering. Meanwhile, Misaki, Kaoru, and Hitomi’s husband begin to piece together their whereabouts.