During their high school years, Yagi and Okami, two humanoid beings residing on Serian, were assigned to explore Earth. Despite once having a strong bond, their relationship has deteriorated, and they now constantly argue.
The story takes place three days after they arrive on Earth, where they receive transformation pills and fertility suppressants. However, Yagi’s behavior during his estrus phase becomes a cause for concern for his companions. Okami attempts to address the issue but becomes the victim of Yagi’s sudden bite attack.
Additionally, there is a side story titled "Usagi to Neko no Hatsujou Jijou."
