Even though studying at a prestigious art school like Yamabuki is hard work, the girls who live at the Hidamari Apartments always manage to squeeze in time for a little fun and exploration. And when they actually get a day off? Watch out world! Yuno, Sae, Hiro, Miyako and new students Nori and Nazuna return to create another masterpiece of life as art, with all new adventures that include swimming, pajama parties, trips to the art museum and even an all-you-can-eat diner courtesy of the landlady! Of course, there’s always a little housework that has to be squeezed in, but with a pinch of resourcefulness and a dash of creativity, even the most onerous of chores can be turned into something magical.

The story takes place in Tokyo Butei High School, a special school where armed detectives — “Butei” — are trained to use weapons. Kinji Tooyama is a second-year-student who has a special ability, but he keeps it a secret to maintain an ordinary, peaceful life. However, when he gets caught in a bombing on the way to school, he encounters H. Aria Kanzaki, the most powerful S-Rank Butei student in Assault Studies.

In response to the worsening crime rate, Japan creates Tokyo Butei High, an elite academy where "Butei" or armed detectives hone their deadly skills in hopes of becoming mercenary-like agents of justice. One particular Butei is Kinji Tooyama, an anti-social and curt sophomore dropout who was once a student of the combat-centric Assault Division. Kinji now lives a life of leisure studying logistics in order to cover up his powerful but embarrassing special ability. However, his peaceful days soon come to an end when he becomes the target of the infamous "Butei Killer," and runs into an emotional hurricane and outspoken prodigy of the highest rank, Aria Holmes Kanzaki, who saves Kinji's life and demands that he become her partner after seeing what he is truly capable of.

A young girl idolizes the world-renowned S-ranked butei Kanzaki H. Aria and plans to follow in her footsteps; however, her test grades turn out as only an E-rank! All is not lost, however, as Aria agrees to give her some pointers. Can Aria help this newcomer become a first-rate butei?

"Opportunities won't wait for you to be ready." – Aria Kanzaki In the world of Hidan no Aria AA, there are special students called Butei who are authorized to carry weapons, investigate crimes and solve various incidents. One of the best of these students is an S-rank second year at Tokyo Butei High School named Aria Kanzaki. On the opposite end of the scale is E-rank first year named Akari Mamiya. Akari absolutely idolizes Aria and wants to become an elite Butei just like her but sadly she just isn't very good and constantly fails her rank exams. One day she gets the bright idea to submit a request to become Aria's Amica (assistant), despite her friends telling her that she shouldn't even bother due to the disparity in their skills. Surprisingly though, Aria decides to give Akari a test, which she not only accepts, but passes! It won't be easy for Akari though, as before she can officially become Aria's Amica she'll have to work hard until she proves her value. Will Akari's dream ever come true or will she be forced to give up before she even has a chance to get started, and can Aria help this E-rank girl go from zero to hero?

The story takes place in Tokyo Butei High School, a special school where armed detectives — “Butei” — are trained to use weapons. Kinji Tooyama is a second-year-student who has a special ability, but he keeps it a secret to maintain an ordinary, peaceful life. However, when he gets caught in a bombing on the way to school, he encounters H. Aria Kanzaki, the most powerful S-Rank Butei student in Assault Studies.

The story takes place in Tokyo Butei High School, a special school where armed detectives — “Butei” — are trained to use weapons. Kinji Tooyama is a second-year-student who has a special ability, but he keeps it a secret to maintain an ordinary, peaceful life. However, when he gets caught in a bombing on the way to school, he encounters H. Aria Kanzaki, the most powerful S-Rank Butei student in Assault Studies.

Based on Team Shanghai Alice's Touhou Project. History revolves around the many events in the lives of two students from the Outside World - Maribel Hearn and Renko Usami. They are the only members of the "Hifuu Club Activity Record" who are looking for those hidden worlds as Gensokyo, the Netherworld and the Moon.

On November 22, 2010, Japan was hit by missile strikes, a terrorist act that fortunately did not harm anyone, becoming known as "Careless Monday." Quickly forgotten, society goes on about their lives as normal. During her graduation trip to America three months later, friendly college student Saki Morimi's life is forever changed when she finds herself saved from unexpected trouble by Akira Takizawa. Takizawa is cheerful, but odd in many ways—he is stark naked and suffers from amnesia, believing himself to be a terrorist. In addition, he possesses a strange cell phone loaded with 8.2 billion yen in digital cash. Despite Takizawa's suspicious traits, Saki quickly befriends the enigmatic young man. However, unbeknownst to her, this is the beginning of a thrilling death game involving money, cell phones, and the salvation of the world. Higashi no Eden chronicles Saki's struggle to unravel the mysteries behind her savior, while Takizawa himself battles other individuals armed with similar cell phones and returning memories which reveal his possible connection to the event from months ago.

The intrigue goes international in The King of Eden, a feature-length conspiracy thriller that continues the action of Eden of the East. The deadly game that began in Japan now intensifies on the streets of New York City. The rules are the same: do whatever it takes to win. Die if you lose.Takizawa prevented Japan's destruction - and then he vanished. Six months later, clues lead Saki to the Big Apple in search of her missing friend. Meanwhile, the remaining Selecao are plotting their final move. Some of them would prefer Takizawa dead and out of the way. Some might even be willing to help him achieve his goals. Unfortunately, some are prepared to destroy everything if it means claiming checkmate in Mr. Outside's puzzling game.

After preventing Japan's destruction, Akira Takizawa made one final request to become the "King of Japan," before he erased his memories once again and disappeared. Leaving Saki Morimi with his cellphone, the only clue she has in regards to Akira's whereabouts is the message, "I'll be waiting where our journey started." Six months later, rumors have spread about Akira, and Saki's search leads her to New York City. However, Saki is not the only person who goes to investigate—with several billion yen burning a hole in their pockets and a challenge to "save Japan," the remaining Seleção are not far behind. Some are willing to help Akira achieve his goals, but a few are making dangerous moves in order to eliminate him and achieve their own picture of a better Japan. With rising stakes and new revelations, the game is still on.

The story of political and subversive intrigue in the series finally reaches endgame. Even as the law enforcement net tightens around Saki and her fellow Eden of the East associates over alleged terrorist activities, the complex web surrounding the mysterious Mr. Outside is finally untangled as the remaining Selecao attempt to outmaneuver one another. Takizawa's memories and identity are also finally revealed including his association with a former Prime Minister and his request to be the King of Eden.