Yuuta Mochizuki

Makino Tsukushi, a girl who comes from a poor family, just wants to get through her two last years at Eitoku Gakuen quietly. But once she makes herself known by standing up for her friend to the F4, the four most popular, powerful, and rich boys at the school, she gets the red card: F4's way of a "Declaration of War." But when she doesn't let herself be beaten by them and is starting to fall for one of the F4, Hanazawa Rui, she starts to see that there is more than meets the eye... (myanimelist.net)

The story begins with three Aliens in human form preparing for a ritual to feed the Fog Mother's "siblings". The Fog Mother last came to earth during the Prehistoric Age and is the cause of the extinction of the dinosaurs. Kenji (KR J) and his kid sister are in the mountains, Kenji is investigating all the deaths of animals and trees there. The Fog Mother sends the three aliens, "Prince Gorai", "Zoo", and "Agito" to kidnap Kenji's baby sister for the sacrifice. (imdb)

It's the fate of a Kunoichi to bear a child. What are the "monsters" that attack the revived Kunoichi warriors of the modern age?

This film teams Kamen Rider ZO and J up against Shadowmoon. Shadowmoon can also be seen on the TV shows, Kamen Rider Black, and Kamen Rider Black RX, as well as another KR film. Shadowmoon becomes resurrected and plans to eliminate ZO and J to take over Japan. Shadowmoon grows at the end, and J has to take him on.