Ryuusei Tenshi Primaveil

The story is about an attack on the lands of an unknown empire known as Markjin, which decided that it was capable of conquering the whole world. To take over the territory, the empire has released its terrible monster with many magical abilities. The best female warriors were sent to fight him, but as soon as they got close to the monster, their clothes instantly disappeared. Soon, they were all captured by a creepy monster who intended to use their bodies in his cruel fun!