Interesting story, a little bit confusing at the beginning. No proper fuck, giving up at chapter 37 as the story side tracks from the main characters and their relationship does not grow so much. Human character also behaves differently (and shows different knowledge) from original intro for his character.
Fang Qi, an alchemist living in the modern world, travels through space to a demon-ruling land due to an alchemical accident. He decides to make demons into pills. However when he wakes up, he finds that he is married to a demon named Bai Yuying. After a series of unspeakable events, the demon siddenly grows up and Bai Yuying is now as weak and small as the rumours say at all.