Captain Evidence: The Brain Is Ready to Explode From the Movie Description:
Rin is an ordinary student, but suddenly her body begins to change, and just on her birthday strange special forces with machine guns instead of noses and kill the guests with bullets from goats. It turns out that Rin is one of the extinct mutants called Hiruko. She escapes and finds other survivors. They are dangerous and armed: their hands rise from their heads, their blades are shot from their nipples, and with this weapon they are going to avenge the society that rejects them.