The Empress Who Bore Kittens (Dubbed)

Rose Vale enters the palace to bear an heir for the childless emperor, Leo Sloane. To her horror, she gives birth to two kittens. She claims her whole pregnancy is a medical mishap and gets banished to Exile Hall. There, her kittens turn into children and call her mother. Rose isn't spared from the schemes in the harem. Thankfully, Leo arrives just in time. He doesn't punish Rose. Instead, he finds the children familiar.