After saving Japan from a missile attack, Akira Takizawa erased his own memories and disappeared, leaving a simple message for Saki: he’ll be waiting in the place where this all started. Having searched for him for some time with the help of Kazuomi, Onee and the rest of the gang, Saki finally determines that Akira is in New York City and heads there to find him. However, the rest of the Selecaos are also looking for Akira, and not everyone is happy about his impending rise to become the King of Japan...
Tatsuhiro Sato is a university dropout and a "hikikomori" – a person suffering from social withdrawal. To Sato’s dismay, his self-imposed exile from the world is rudely interrupted when a mysterious girl knocks on his door. She has charged herself with the task of curing Sato of his hikikimori ways! Now, as new problems ranging from hentai games to internet suicide spring up, can Sato manage to overcome his hermit-like ways, or will the imaginary N.H.K conspiracy force him to remain a hikikomori forever?
Both of these shows are beautifully animated, involve conspiracy theories (though to differing extents), and are set in modern day Japan. Of course they both offer a love story, as well as a good mix of drama and comedy. But the thing that makes these two the most alike is their commentary on current events in Japan, particularly with the age gap and NEET/hikikomori phenomenon.
Kaoru Takamura, an employee of the Foreign Ministry, is on a mission. With the help of his trusty, high-tech Xi phone, Kaoru must find a mysterious man, and the trail leads him directly to Barcelona...
If you're looking for something similar after watching any title of Eden of the East, check out Xi Avant. Same director, same character designs, and a similar story about an ultra high tech phone.