My Sweet Little Wife with Metaphysics

When Lin Siyue was murdered and on the verge of death, she merged with the carefree goddess who had been trapped in reincarnation for five hundred years. To escape reincarnation, she needed to accumulate merit. Just then, the Qin family matriarch was afflicted by a malevolent spirit, and Lin Siyue rescued her, discovering that the Qin family's young master, Qin Yifeng, was deeply blessed and an excellent source of merit. Lin Siyue also discovered that Qin Yifeng would turn into a child when he touched a woman, but she was an exception. Together, the two investigated the source of the malevolent spirit, uncovering the Lin family's conspiracy to raise a malevolent spirit to usurp their position. During this process, they both awakened their past life memories: Qin Yifeng was the Demon Lord Mo Yuan, and Lin Siyue was the carefree immortal Yuan Chen. Ultimately, with their souls restored, the two joined forces to eliminate their obsessions, continuing their past life's love in this life, and finally becoming a couple.