Ryuusei Tenshi Primaveil

An evil alien leader invades a city and got a power to removed the clothing of the females but could eradicate the lives of men. Most guys in the city turned into a sludge. Then, evil minions are on the prowl to fucked the beautiful women. Our heroine showed up and tried to beat the leader. But it grows up to something big and turned his big cock into something like a weapon of mass impregnantation. One of the heroine is captured and turned into a sex slave by the evil organization.