X's biological sister, also known by her online username Y. She is a PhD student at an Ivy League university, described as a stunning academic beauty who radiates intelligence. She has a great sense of humor and humorously described herself as a winter-prepping hamster. She is currently pregnant and living abroad. Her lifelong dream is to marry an AI. She follows Lexin on social media and was unaware of the misunderstanding between Lexin and X.
