My Superpowered Family and Me

In District C of City B, Province A, there was a family like this: Dad could lift a truck with one hand. When Mom got furious, her hair burst into flames. The eldest brother was impervious to blades and bullets. The eldest sister could switch between human and cat at will. The second brother could turn invisible and hide in a corner, shutting himself away. The youngest sister had telekinetic powers that were second to none. Amazingly, none of the family members knew one another's abilities or identities. Except our protagonist, the youngest son, who was completely ordinary, knew everything about everyone, and could be knocked over by a breeze. He was a mind reader. Youngest son: I'm going to bed. Don't bother me. Theme: A harmonious family starts with me.