Unaware His Majesty Is a Girl

The new emperor, Qi Nian, took the throne many years prior. He consistently dismissed the pleas from his officials to select a consort, citing, "the affairs of state are important, and I am busy with my work." However, But Qi Nian ultimately gave in as the rumors claiming "the emperor is impotent" began to spread increasingly.
Yu Dingdang was a notably simple-minded girl, but she hailed from a distinguished family. This led many to remark: "Madame Yu exchanged her brain for her looks." Who would have anticipated that Yu would be chosen by the emperor to become his empress consort?
A joyful and dramatic romantic comedy between girls set within the imperial palace. Yu could never have imagined that this exalted emperor was, in fact, a girl?!