Several stories in this collection feature the return of characters from Black Jack's past, including two stories with arch-nemesis Kiriko, the doctor who's as enthusiastic about euthanizing patients as Black Jack is about saving them, and one featuring Konomi, the so-called "Black Queen." There's also some stories that push the envelope for sentimentality, even within the extreme context of "Black Jack," like the one about the thalidomide-afflicted child who gets a new set of arms from Black Jack but can't count on them to help him win an abacus tournament, a few that are just plain weird, like the ghost story, and the genuinely creepy "Pinoko's Mystery"--a story that not only acknowledges the more perverse aspects of Black Jack's relationship with his young sidekick, but finds comfort in them.
But there's hardly anybody who can rival Tezuka at laying out a story in comics form, and even when the stories are silly, he's able to hold your attention with his powerful, dynamic imagery.