When you are in a business called the Kurosagi Corpse Delivery Service, you do not expect one of your clients to get up and walk away. That's what happens early on in this installment, but the kids find him later, genuinely dead. In fact, he is dead twice over. He is carrying an older, deader transplanted kidney. This discovery leads the team to a very dodgy trade in organ harvesting from illegal immigrants. It also takes the to Iraq. Since this third volume is episodic unlike the single, book-length tale that made up Volume 2, the Delivery Team still has time to encounter a murder/suicide club operating in Tokyo.
A significant feature of this series is the Glossary and Notes at the end of every volume. The glossary mostly translates the kanji used for sound effects. I used one as a Potato Weather Posting here . But there are helpful notes that give some cultural background to the plots. The notes also explain various misconceptions the authors have about Western societies that make their way into the stories.