Hormones are a delicate substance hidden within the depths of the human body. It is a royalty, who's slight presence forces the body to act under it. It sometimes save peoples lives, but it can also cause death...

It requires a perfect presence for it to maintain its royalty, otherwise it becomes a threat. But its pretty rare to happen.

This exact situation happened to Shota Yu, who was still in high school. Although having an excessive amount of hormones, his life changed when he met someone having the same disorder. Fulfilling each others needs, they live together, having a happy life.