Fics like In Our Wild Youth

When Hua Cheng drinks the True Shape Serum, it has an unintended effect. In a rare moment of bad luck, his spiritual power reacts to it strangely, causing him to revert into his earliest ghostly form and lose his memories. Much to Nan Feng and Fu Yao’s horror, the Scrap Immortal recognizes him. In his eight hundred years haunting the three realms, Hua Cheng has shrugged off and crushed far stronger enchantments and curses. By all rights, the True Shape Serum shouldn’t work on him. It's a paltry trick, no more than an annoyance considering the vastness of his spiritual power and the breadth of his experience with spellwork. So it's hard to say why Hua Cheng’s spiritual energy reacts to it the way it does. Possibly, the enchantment recognizes that there's nothing he wants less in the world than to lie to His Highness now that he’s finally found him again, and seizes on this weakness. Perhaps it was foolish from the start, to think that he could deceive his God when his very being sang to tell him everything he knew.

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