Bishoujo Senshi Sailor Moon S: Kaguya Hime no Koibito

A sudden snowstorm strikes Tokyo, revealing the presence of Kaguya, an evil snow queen seeking to freeze the planet. The Inner and Outer Sailor Senshi join forces to stop her. At the same time, Luna develops feelings for a human astronomer named Kakeru, whose girlfriend is preparing for a space shuttle mission. Kakeru falls ill, and Luna longs to become human to assist him.