The protagonist, a 25-year-old web novel author (self-described as a 'coder' or 'code peasant') who stayed up late writing extra chapters. She had a Pocket Dimension/Mustard Seed Space ability since childhood, a one-cubic-meter portable storage space that could also function as a vacuum preservation chamber. She was stabbed by a lunatic on a bustling street after buying groceries and milk tea. Upon regaining consciousness, she discovered she had transmigrated into the body of a Cairen (a middle-to-lower rank imperial consort) in the fictional Xuan Dynasty. She realized her chest had flattened and initially feared her gender had changed, but was relieved to confirm she was still female upon hearing the title 'Cairen'. She was raised by her maternal grandmother, whose death from cervical cancer three years prior left her family in financial difficulty. Her parents were described as irresponsible.
