Harurin, the eighth princess of Sakae, is an eccentric who is interested in nothing but painting. She is treated like a tumor in the royal court, and is invited to join the kingdom of Karada, a neighboring country to the west, where a war is raging. At the wedding ceremony, she meets the king's Onitake, a strong-looking warrior. Moreover, he cuts down a rebel who interrupted the ceremony with a single sword. The people around him froze in horror, but the bride, who was sprayed with blood, said, "I love you, please marry me. This is a tale of an eccentric couple solving a Chinese mystery, which begins with an unprecedented confession!