In Such a Big World, I Somehow Fell for You

A man showed up at my house out of nowhere!! He gave me a nickname, took over my bed, and ordered me around like a servant! But in the end, he said, "Cheng Ran, Cheng Ran, you're neither gentle nor clever, and your emotional intelligence is even lower than your IQ. How did I end up falling for you?" "It can't be helped. The world is so big, and you happened to run into me!" Theme: