
S01E01 Crimson Wings
The Xi: unidentified flying objects that are vastly more powerful than humanity's best fighters. Kei Narutani is fleeing Shanghai on an evacuation ship when he's attacked by the Xi, but a mysterious red fighter jet...
Kei meets Gripen, the fighter jet who saved him. The plane itself is called a "Daughter", and it's piloted by an artificial life form called an Anima. That was the young girl that Kei met. Yashirodoori tells Kei to spend time with Gripen. As they walk through the city, the bond between them begins to deepen.
The mysterious flying creatures known as Zai suddenly appear, and in order to fight the creatures, mankind creates fighter aircraft called "Daughters," as well as the automatic fighting mechanism "Anima," which are shaped like human girls. The story centers on a young man named Narutani Kei, who yearns to fly in the sky, and an Anima considered to be humanity's trump card, a girl name Guripen.