is a Japanese anime franchise produced by Konami and animated by J.C.Staff. A 30-minute OVA episode was released on August 25, 2006 and a television series adaptation aired on Chiba TV from July 5, 2007, to December 27, 2007.
Plot
In the year 2071, humanity sees the appearance of mechanical cell clusters, known as WORMs. The technology begins sweeping away the human race on a massive scale, destroying one-third of the human population in just under two years. This leads humanity to overcome their national differences, and unite as a single force. Not being able to turn the situation in their favor, humanity decided to permit the use of weapons of mass destruction. Finally, they succeeded in the annihilation of the WORMs, but after paying an enormous price, and wreaking havoc on the planet. All the major continents were broken apart. Antarctica disappeared, and half of the remaining land mass was submerged. The largest damage this war caused was the loss of 90% of all military-age personnel, namely men in their twenties and thirties. Over a decade later, the WORMs re-appear, to the surprise of those who thought they were eliminated.
Characters
Sky Girls
Otoha is the main master with the sword but is otherwise an unknown in her abilities. She comes from an island where her family runs a dojo. While on SkyMu, she is sweet and naive, in reality, she is feisty, violent, bossy, tough and a latecomer to the scene. She has a twin brother, who one day disappeared while sitting on a rock talking about flying together when a mass of light appeared. He appears later in the series proclaiming he is the WORMs' "messenger". Her Sonic Diver Unit is named Reijin, but she nicknames it "Zero".
Eika is the main leader of the team and is quick at making decisions, has fast reflexes, and high stamina. She has a good leadership and more mature than the other two pilots. She excels in overall ability, much more than the other two pilots. This makes her the perfect choice for leading the Sonic Diver Unit. She was skeptic of her teammates, but later she trust them and created a strong friendship between the Sky Girls. The other Sky Girls look up to her and follow her good examples. Overall, she has a serious personality and is a tsundere character.
Karen is a genius with an IQ of 170 and is an authority on mechanics. She is a university-graduated girl at the age of 16 years. She has trouble talking to boys, as she can be quite shy around them. She has a mild crush on Takumi. Karen also enjoys writing letters to her older brother who works just outside the base as an architect and loves him very much.
Elise is the youngest pilot of the Sonic Diver Unit. She is the sole survivor after the WORMs destroyed the West Europe base. Traumatized by that disaster, she suffers initial problems integrating into the Sky Girls unit, especially with Eika because of her "selfish brat" attitude. When she joins the team, her overall ability as Sonic Driver pilot is very good, although not as good as Eika. She flies the only mass-produced Sonic Diver unit built before WORMS destroyed the manufacturing facility. She was briefly seen in episode 6 of the television series, and is formally introduced in episode 11.
A mysterious, shy and emotionless girl of Indian origin whose late father conducted scientific work on nanotechnology connected to the origins of the WORMs. She has shown limited 'remote control' of the WORMs, as seen in the episode 20. At first, everyone feared her because her emotionless personality, Otoha being the only one who was very nice to her. Near the end of the series she becomes the fifth Sky Girl, and pilots the Sonic Diver Shunya.
Secondary characters
A former skilled combat pilot, he protected Zin Hizaki from a WORM's attack and injured his hands in the previous war against the WORMs and can no longer fly. Now he commands the 13th Aviation Corp (the Sonic Diver squadron). Eika is the squadron leader and his subordinate. His duties mostly revolve around training the pilots, relaying their orders from above and making sure the unit's needs are met. He is the only member aboard the Koryu that does not wear a traditional uniform. Instead he wears an old leather flight jacket with a winged skull on the back, a white shirt, and blue jeans. He also enjoys fishing (although he never catches anything). Although the three pilots see him as a non-sensitive man he actually really cares about them. The reason he is strict and stern to them is for their own good as pilots who drive unusual combat weapon.