Based on a series of "Jooubachi no Kanbinaru Kougou" adult Drama CDs released by Hitsujigumo.

Bees rule and feed on the people, and have a lifespan of several hundred years. The one who maintain the hive in the sky is the great mother bee... That is what the protagonist Menou has been called from a young age, raised deep inside the castle. But she resists eating people, and as she passes her days she holds no sense of being queen. The task given to her by her mother, the current queen, is the assassination of her sister Kaguya, the other candidate to be queen. That was the first time Menou knew that Kaguya was still alive. At the same time, males aiming to become the queen's husband begin to make their move.

Why was Kaguya's survival hidden?

What does one lose when they become queen?

The protagonist Kaguya, a candidate for the throne, fell from a cliff to her death several years ago -- at least that is what was said. In reality, she survived. Tonight, too, she will continue be be assaulted by the males who weren't approached by the queen to ease their grief. That was the tragic truth. Perhaps her mother, the queen, believed that it was Kaguya's duty as her daughter to perform this role. But the time is up. As the queen's death approaches, Kaguya leads a revolt to the castle up in the sky.

Is the one suited to be queen Kaguya or Menou?

Is blood or forgiveness more suitable to Kaguya?

Kaguya is caught between love and hate.

In the mixture of expectations of the queen from the humans and bees, with a blood covered history, a girl's story begins!