Atsushi Watanabe, the writer of Lemon Angel, and Kaoru Ochiai, cooperated together and published a new SF story!

This story happend in the near future. Activities of human beings kept polluted the Earth. Was human being the parasite on the Earth? Do the nature actually want to expel the harmful humans or just let it be? Which should be protected, the human or the Earth? Based on this unsolvable question, there were two opponent organizations. A boy was holding the secret of the future, in front of whom appeared a miserable girl. If not for the justice, what were the girls risking their lives for? A fierce battle was beginning ...