Question: Which Japanese manga series written and illustrated by Naoki Urasawa, when turned into an anima, did Mami Koyama  have a voice acting part in?
Sentence (from "Mami Koyama"): Mami Koyama (小山 茉美 , Koyama Mami , born January 17, 1955 in Nishio, Aichi, Japan) is a Japanese voice actress affiliated with Aoni Production.
Relevant evidence: Yes