The Villain Only Raises Backstabbing Heroines, So Why Do They All Regret It?

I opened my eyes and became the main villain, and the future empress is the girl I raised? When Fang Buping opened his eyes, he had become the main villain in a book. In the story, the villain finds the heroine in a slum and trains her through cruel methods to become a demonic saintess who kills without batting an eye, destroying her conscience. He even schemes to take the heroine's naturally sacred Yin body by force. In the end, after she becomes an empress, she cripples his cultivation in front of everyone, turns him into a human pig, and has him paraded through the streets for ten years. From the start, Fang Buping looks at the grimy, timid girl before him and gives her a push away with a trembling hand. “Here's my storage ring. It has all the pills and treasures you need to cultivate to the Great Emperor realm. Take good care of it.” “Here's my spirit pet. It's at the Saint level and can keep you safe. In a single breath, it can travel across an entire province.” “Here's my holy armor. It has a protective ward, so even three or five people at your level couldn't beat you to death.” “Here's my cultivation manual. Actually, forget it, it's too sinister for you. This manual from the Profound Yin Sacred Land suits you better. Take it. It'll carry you all the way to the Saint level.” “Here's... my sect. You can have that too. As of today, you're the youngest sect master in our Illusion Demon Sect.” “As for me, the old sect master, my lifespan is nearly up. See you around!” After tossing away all his treasures, Fang Buping slipped away. He only wanted to find a quiet place to watch the heroine grow, lie low until the story ended, and return home safe and sound. - Years later, just as his mission is complete and he's about to return, the heroine finds him at the very last moment. “You lied to me. The person who protected me was you, wasn't it?” “You abandoned me. Now it's my turn to find you and bring you back.” “This time, don't even think about abandoning me again.”