- Time-travel mechanism: Due to a laboratory accident (quantum collapse experiment), the male protagonist Lu Chenyuan's soul traveled through a parallel world and possessed the body of Su Wanyue, the legitimate daughter of the Hou Mansion. However, Su Wanyue's soul did not disappear, but coexisted with him in the form of a "second personality in the brain" (the setting of two souls in one body, laying the groundwork for later emotional lines).
- Gender tension: Lu Chenyuan retains his male mind, but his body gradually becomes feminized (menstrual period, appearance changes). In the early stage, he had a strong sense of separation due to "male consciousness controlling the female body", and Su Wanyue's remnant soul will briefly take over the body when he loses control (such as mood swings, dangerous moments), forming a "gender-switching self-rescue".
