By dating the spirits "and ...... That is to play, Sydow is whether? Says want to go to De~eto and Me", ey again delle!? Juko, four Ito乃, Kinsato, Hachimai. And ...... "-? From now, it does not do a date" mad three also appeared!
Thirty years before the beginning of the story, a massive destructive event began to occur, called a space-quake. This occurred in Eurasia (the area of the two continents where they connect via nation-states like Russia and other areas) and killed over 150 million people.
Eventually, after a while, these calmed down, and the world improved their technologies based on discoveries from the phenomena, while waiting with bated breath to see if more destruction would occur. Then, five years before the story begins, the quakes started up once more, this time mostly in Japan.
The story begins with our main protagonists, a young high-school student named Itsuka Shidou and his kid sister Kotori. After a funny series of events, Shidou meets up with a beautiful girl who the government blames for the space-quakes. They occur whenever she appears, so even though she doesn't want to hurt anyone, everyone is trying to kill her. The girl is in a state of despair as so many are trying to kill her and she doesn't want to hurt anyone, but just be left alone. This is exhibited by the fact that the fights easily show that she could annihlate her opponents and kill them utterly if she wanted to do so. Yet she refuses.
To make matters stranger, Shidou learns that his sister works for the government and that only he can stop the spirits by getting them each to care about him so he can seal their powers with a kiss.