Sakurako Kujou is a genius beauty in her mid-twenties whose life is centered around one thing and one thing only: bones. With little tolerance for others, she would be completely isolated in her study full of skeletons if it weren’t for high school boy Shotaro—her new assistant and constant companion. Why exactly she has taken a shine to him remains a mystery, but one thing is clear: Whenever the two go out together, the chances are high that they will come across a human corpse.

The manga adaption of the original novel's 4th volume of the same name.

Tatewaki Shoutarou and Kujou Sakurako. Shoutarou is a normal high school student with a serious demeanor who likes to show off his girlfriend Sakurako. Sakurako is an extraordinarily beautiful woman in her mid-20s from a rich family who loves "beautiful bones". The two live in the city of Asahikawa in Hokkaido, and they get involved in various incidents regarding bones.

A "poison consort" with access to all kinds of poison and a boy who is a "cross-dressing consort" solve the mystery lurking in the harem! The time is the Great Tang Dynasty. A boy named Gyokuran, who entered the harem as a cross-dressing consort in place of his missing sister, meets the poison consort Dudu, who is said to have access to poisons from all over the world, past and present. The two of them must try to solve the mystery of the mysterious incidents that have been unfolding in the harem... (Source: Kadokawa, translated)