That JAV

One day, our heroine, a kind-hearted nurse, rescues a man who has fallen ill on the side of the road and takes him to the hospital where she works. However, the man is an invader from outer space! Suddenly a monster appears and destroys the city! The heroine is guided by a mysterious ring given to her by the man, and transforms into the giant heroine, Sophilia! After a mortal struggle, she is able to defeat the first monster, but the man reveals himself and rapes her, and multiple monsters appear in the city. As the people look on, Sophilia is cruelly attacked by the monsters... ［BAD END]