Aunt in the Coffin

To avoid pursuit, I hid in the coffin of the regent's biological mother. On the night of the burial, he personally opened the coffin and conducted an autopsy, and he met my eyes while I was still alive. In order to track down the real culprit, he mistakenly identified me as his "little stepmother". From then on, I enjoyed the honor of being a legitimate mother in the palace while interacting with him as a "filial son" day and night - until the night of the palace coup, when he handed the bloody sword into my hand: "Mother, it's your turn to play chess."