http://anidb.net/perl-bin/animedb.pl?show=anime&aid=1431 Takemoto Takeru, an ordinary high school student, encounters a strange light during a bike delivery for his part-time job. When he stops and searches the surroundings, he observes a cute girl named Hikari climbing out of a sparkling cocoon in the forest. Takeru is instantly taken by her feminine charms, but suddenly a monster appears in the same spot and attacks the girl. This is a story about the tranquil days spent with the mysterious girls Hikari and Akari, Takeru's childhood friend Nishino Mari and his classmates. Though who are Hikari and Akari really? And why did they come to Earth? Source: AnimeNfo