Class idol and rich girl Reiko finds an interest in an average boy Mamoru. When he tries to confess to Reiko, the whole place gets drawn in a flash where girl Ibrize stands. She is an android who comes from future to change Mamoru's fate. She is constructed in such a way that at any time and place she can can take off her clothes and coerce Mamoru to sex. At the same time another girl calling herself Mamoru's daughter Mana arrives from future to prevent the change in history. The situation is aggravated by the attacks of "Lilith" type androids. Which side will protagonist take?

[From vndbreview]