Kitamakura Hakase no Yuuutsu

At the end of the 20th century humanity is facing an unprecedented crisis, however most of people are unaware of it. Main character Dr. Kurashira has a genius mind, but he is treated as mad scientist, because he knows the truth of the world... He tracks down school girls who possesses excellent genes in order to pass them to the future generation. But will girls cooperate?

[From vndbreview]