Sachiko Suzuki is a female high school student. She claims that she is an alien and her mission on Earth is to conceive a child with a human man. Sachicko…

Mitsuki (Tenka Hashimoto) and Yuya (Yukichi Kobayashi) become stepsister and stepbrother because of their parents’ marriage. Mitsuki can’t get along with her new family and Yuya doesn’t know how to…