My Whole Family Is Non-Human, and I Quietly Become a Superman

My girlfriend is an alien, my mother is a pseudo-person, my sister is the Rainy Night Butcher, and my sister is a vampire... Meng Yan had lived for more than 20 years, and suddenly found that he was the only normal person in the family. "Hey, Yaoyao Ling?" "I discovered that my parents are not human, my sister is not human, my sister, my girlfriend... My whole family is not human!" "I need Bureau 749 to protect me!!" Late at night, the room was dark. Meng Yan huddled behind the door alone, trembling and dialed the alarm number...