I Became My Best Friend's Sister-In-Law

My famous Lin Xibei was actually touched by this damn best friend and her brother!!! During the winter vacation, this Yang Yuyao promised to go back to her hometown, but she forgot to bring her ID card and asked me to go to her house to get it. She escaped the early morning exam at school, but she couldn't escape Yang Yuyao's stupid brain. ... Who would have thought that when I went to her house, I would see Yang Yu instead of my ID card... "You're here..." "Yang Yu! What are you doing!! Don't touch my hand..."