How Can I, My Whole Family, Be Mentally Ill?

[Light suspense, light supernatural, three correct views, the protagonist is really not mentally ill] My name is Lu Qi, I am 19 years old and I was born in the 110th year of the Red Moon Calendar. Since the red moon rose, the world has become sick. Madman, monster, weird, taboo... People can only live in independent city-states. I live in Los Angeles with my father, mother, and sister. My father is elegant and gentle, my mother is dignified and elegant, and my sister is like a quiet night-blooming night flower. They were all very kind to me, but now they are all sick. This damn red moon disease...