Han Seimei Senki Andorogynus

In our universe matter and anti-matter co-exist with each other. However, prevalence of anti-matter may create chaos and eventually disrupt the normal flow of things. In a corner of a universe, a concentration of anti-matter led to the creation of an entire star, breeding forms of life threatening to destroy the world. Human beings, in an effort to save the universe, created the powerful Andorogynus - a life form capable of being male and female at once - and sent it on a mission to destroy the creation of anti-matter.