This manga from the 70’s and 80’s is still popular.
It follows the story of Black Jack, a medical doctor.
He is a surgeon for hire and will work for anyone and take care of anyone.
This makes him sound pretty badass and callous.
But he does good deeds – often healing the poor for free if he is touched by their suffering.
His assistant is called Pinoko.
She was a bunch of organs parasitically living inside her sister for 18 years.
Black Jack constructed a body for her to live in so she could live independently.
Black Jack was created by Osamu Tezuka and it was published in Weekly Shonen Champion.
It has also been made into television animations and movies.