Karin (Hua Ling), a maid in training, longs to make friends in the imperial harem, but her father's political scandals have made others fear her. When she discovers that the only person who shows her kindness, the young emperor, is in danger from assassins, she must use her inherited assassination skills to protect him and navigate the dangerous conspiracies of the harem.

This is the physical copy of the Palace of Assassins manhwa.