The truth behind the Windshadow Boots incident from back then had already come to light, yet many mysteries still remained in Chen Rui's heart.
One of them was Tiffany.
Tiffany harbored deep resentment toward Lei Chan. She had abandoned the throne of the Demon Realm and stubbornly come to the human world solely to search for her mother. Lei Chan had once said that Tiffany possessed the power of bloodline resonance, which she could use to find her mother's whereabouts. Now that she had become the disciple of Saintess Eudora, it was highly likely that the Saintess was Tiffany's mother.
The approximate time when Lei Chan had relations with "a certain woman" and fathered Tiffany, and the time when the Windshadow Boots were swindled away, were both over a hundred years ago. From this, it could be inferred that Eudora was the central figure in both incidents—but there was certainly a question of which event had come first.
Eudora's union with Lei Chan had been the result of Satan's manipulation. The purpose had been to use their constitutions to create a "key" possessing both light and darkness, so that in the future it could enter that mysterious place and obtain the Silver Casket. That "premeditated plan" had now become reality.
Suppose that Eudora had come to the Demon Realm back then for training or some mission, only to be captured by Satan. Under his control, she had relations with Lei Chan and gave birth to Tiffany. Once Tiffany was born, Eudora had effectively lost her value of use. Given Satan's power, he naturally would not care whether such an ant lived or died. Most likely, Eudora had escaped from the Blood Fiend Empire, then encountered Isabella and staged that scene of dressing as a man to swindle the Windshadow Boots.