Stratosphera no Yousei  

Elfen der Stratosphäre, Nymphs of the Stratosphere, 스트라토스페라의 요정, ストラトスフェラの妖精, Stratosphere no Yosei

In the near future, our disregard has caused harm to our world. Then, five ethereal beings appear as angels from space, radiating a seductive aroma. Their goal seems to be to revitalize humanity. As a programmer works late at night, he notices one of them watching him and another couple through his balcony window. After she leaves, the scent of forbidden fruit lingers in the air. The programmer realizes that he must track her down, but what he doesn't know yet is that she's an extraterrestrial being.