At first, Takayuki Narumi is befriended by Mitsuki Hayase only because Mitsuki's best friend, Haruka Suzumiya has a crush on him; however since then, Takayuki, his pal Shinji Taira, and Mitsuki have grown to be the best of friends. Then one day, Haruka confesses to Takayuki her love for him. Not wanting to hurt her feelings, Takayuki agrees to go out with her. After a few incidents, their relationship gets intimate, even while Takayuki and Mitsuki begin to realize their feelings for each other. But when tragedy strikes, things are never the same for these four friends again.

Aika's story continues, she is now 19 years-old, 3 years older than in R-16 and 7 younger than in Agent AIKa. Strange phenomena have been occuring at a girls academy. Slowly but persistently the most cute and beautiful girls are joining an internal club, but instead of a sing-in they just get abducted by a strange being that takes control over them by some indecent means.

By coincidence Aika was flying-by on her plane when one of this abductions occurred and she was attacked to prevent her from comming closer, but instead of repelling her, she is intrigued about the attack's origin and then the opportunity shows up when her late partners from R-16 decide to investigate those abductions. The story remains full of action and panty flashing that are a must in Aika's series.

[Source: Anime News Network]

A catastrophic earthquake has left Tokyo, and most of the Earth for that matter, under the sea. Aika is a salvager who retrieves various remains from the watery ruins. When Aika accepts the dangerous mission of locating and obtaining the mysterious Lagu, she discovers that she's not the only one after it.

Aika is a smart and athletic high school girl. She is so competent that she successfully passes the salvagers license test, obtaining a C-class license. Yet, she is young and hotheaded, so much so that Gota still treats her as a child. Due to this personality, no one is willing to hire her for salvaging jobs.

Since she had taken the trouble to get her license, she decides to post an ad in her school to attract clients. She manages to get the attention of Erika, a daughter of a rich family and the leader of the treasure hunting club. She asks Aika to salvage something from the sea and Aika delightfully accepts the request.

However, upon seeing the state-of-the-art submarine loaded onto Erika's private cruiser and discovering their destination, Aika realizes the terrible nature of her assignment. This results in a clash with a group of high school girls in the southern islands.

Who is the mysterious girl named Karen? So begins Aika's newest challenge!

[Source: AnimeNfo]

In the distant future, mankind is divided into two factions: Union and Deague. They have waged a war against each other for so long that no one remembers when it first began. The backbone of the Union military is the manned weapons system Strain, while the Deague uses an unmanned version, the Tumoru.

Sara Werec, the daughter of a respectable family, is a 16-yearold girl who attends Grapera Space Armed Soldier Academy located in the Cranial Solar System, where she is training to become a full-fledged Reasoner (a Strain pilot).

Her brother, Ralph Werec, had been sent to the frontline 130 light-years away to accomplish a special mission when she was 11 years old, a distance that requires 400 years of objective time to traverse by even the fastest Union spacecraft. However, in accordance with the theory of relativity, this corresponds to only two subjective years (time as experienced by those within the spacecraft).

The two of them had lost their parents when they were young and the bond between the two is very close. It is Sara’s dearest wish to be reunited with her brother. To do that, she must travel to the battlefield where he is.

One day, Sara’s planet is suddenly assaulted by Deague forces. To her surprise, her brother, Ralph, turns out to be one of the raiders who successfully kidnap a mysterious girl sleeping in a capsule.

In order to find the truth, Sara gets in a Strain and chases after him. However, she is attacked by Ralph, and the Mimic, a copy of the pilot’s brain which is essential to controlling the Strain, is damaged.

[Source: AnimeNfo]

The Earth has developed a defense system against large meteorites that are on a collision course with it. This protection system is made up of the Comet Blasters based in several space stations as the 1st line of defense, using nuclear warheads launched by spaceships. The 2nd line of defense consists of the Meteor Sweepers launching from ground airbases using hypersonic planes with special missiles to deal with the resulting debris from the blasts. Mikaze is a troubled girl that is a trainee pilot for a Meteor Sweeper team that dreams of becoming a prestigious Comet Blaster pilot. Stratos 4 revolves around Mikaze's and her teammates' challenges to become real pilots, while the Earth faces the threats that come from space.

[Source: Anime News Network; emended]

In the sky over Hakata city, fighter planes were flying and bombers are dropping bombs one after another. It became a sea of flames around Fukuoka Dome. At that time, a light appeared in the sky. In the shower of missiles, it intercepted enemy planes by its energy cannon. It was another “Ultimate Weapon”.

In the meantime, Chise was suffered from the fact that she’d been turned into a weapon against her will, and she was thinking about Shuji. However, the army continued sending her to the battle fields.

Whether another ultimate weapon is an enemy or a friend?

This OVA will reveal another truth that wasn’t described in TV series.

[Source: AnimeNfo]

Najica Hiiragi, perfumer and secret agent, is sent out on a number of recovery missions to round up rogue humaritts, androids with combat abilities. Najica is assigned a humaritt partner, Lila, whom Najica is to groom as an agent and receive assistance from along the way. As Najica grows to accept Lila, each new mission they embark on reveals more and more about the capabilities and mysterious origins of the humaritts.

[Source: Anime News Network]

When Ryunosuke's pet cat dies in an accident, his inventor father "resurrects" the cat by placing its brain in an android body made in the form of a young girl. The Android, Nukunuku, has the dual purposes of being a companion/sister for Ryunosuke as well as being a bodyguard for his father. Nukunuku's extreme strength and feline agility are regularly needed to protect Ryunosuke and his father from Ryunusuke's mother who seeks to kidnap them both following her divorce from his father. Her motives towards Ryunusuke are simple motherly love, however her genius-inventor-ex-husband she wants to put to work designing weapons of mass destruction for her weapons company.

[Source: Anime News Network]

Meet Galan, a Russian spastic geek who'd do anything to be a real, live samurai. But that's just an impossible dream... or is it? When his friend Natsu, who is a successor of Japanese emigrants family, gives him the gift of an ancient sword, strange events unfold, and even stranger people drop out of the sky to attack. Now Galan must overcome his ineptitude and join a bunch of beautiful women in a wacky romp through a kingdom that time forgot. Hey, what could be better?

[Source: AniDB; emended]

When aviation mechanic (and anime fanboy) Takuya Isurugi is transferred to the 801st Tactical Training Squadron, he gets more than he bargained for. Moderated by hard-headed veteran ace Mitsuru Konishi, the "Airbats" are an all-female aerial acrobatic team consisting of loose cannons Miyuki Haneda and Arisa Mitaka, karaoke freak and gambling genius Sakura Saginomiya, and junk food lover Yoko Shimorenjaku. Both Haneda and Mitaka do not get along with each other, and their rivalry worsens when they both fall for Isurugi. But with the entire JASDF having doubts about the team, the Airbats must work as a team or face total disbandment.

After meeting a dancing old man in what she thinks is just a crazy dream, a preteen schoolgirl embarks on a series of fanservice-filled magical girl adventures with a little creature named Ongo who might be evil and a shy girl with mysterious powers named Nami.

[Source: Anime News Network]

In the middle of another break from school, A-Ko dreams of finding the perfect boyfriend. Because of this, she and C-Ko get into an argument that leads to C-Ko running away and nearly getting hit by a motorcyclist named Kei. While working part-time at a fast-food restaurant to raise money for a party dress, A-Ko meets Kei and immediately falls in love with him. B-Ko happens to like him as well; however, both A-Ko and B-Ko are unaware that C-Ko is the apple of Kei's eyes.

[Source: Anime News Network]

Rei Sugiyama never had much self-confidence but always found solace in watching anime. One day at an anime festival, he is transported to another dimension where the jet planes from the anime, Yukikaze, take on the form of beautiful girls fighting a never-ending battle against the JAM. Rei will have to choose between going back home and saving the girls from a fate that awaits all anime, being erased by Demon of Oblivion. In order to save himself and the girls, Rei must first learn to believe in himself.

In Iraq, a group of archaeologists discover ancient relics that prophecize the coming of a superior race and the end of all civilization. Meanwhile, back in Graviton City, as A-Ko and B-Ko's rivalry over Kei intensifies, Mr. Daitokuji sets up an arranged marriage between Miss Ayumi and Kei. Furious over the engagement, both A-Ko and B-Ko do whatever it takes to prevent the wedding from going through. Little do they know that another alien fleet is on its way towards Earth.

[Source: Anime News Network]

After successfully returning to Earth on the renovated Stratos 4, the four main characters are visited by the Comet Blasters Chizuru Kubo and Annette Kerry, who bring them a shocking video. Meanwhile, Orbital Station 7 is in serious trouble...

This two-episode OVA comes between the first and second seasons.

[Source: Anime News Network; emended]

Having failed the Comet Blaster exams mysteriously, Mikaze and her friends are sent back to the Shimoji Island base, where, with three new Meteor Sweeper trainees around, they have been promoted to instructor positions.

Meanwhile, more comets are on their way to Earth, and the mysteries behind the rift in the Cosmic Emergency Management Agency—as well as the alien parasites—begins to unravel.

Crisis befalls the main characters and the Earth as well! How do they deal with the conspiracies that they have uncovered, while protecting the Earth too? (And what happens to the cliffhanger at the end of the previous episode?)

In these final two episodes of Stratos 4 Advance are the exciting conclusion to the whole Stratos 4 series. The main characters will have to draw on all the resources they have, their friends and allies and their own sheer force of will, to "bring tomorrow to Earth," as one of the characters puts it.

A bonus episode about Aika and company moving to a new office.

Mysterious giant robot easily defeating many powerfull robots from many countries. Whole world is wondering what country made him. Aside from those battles in far little kingdom 3 princesses living. And one of them has constructed her precious friend.

[Source: Anime News Network]

A-ko and B-ko are bounty hunters in an untamed world. When a young heiress, C-ko, falls out of the sky and into their hair, they find themselves battling space pirates and galactic police. Turns out the high-pitched, hungry C-ko holds a secret—the spirit of an ancient evil—and is the center of a plot to destroy the universe!

[Source: MyAnimeList]