Mysterious Boy Complete Set of 9 Volumes, by Kazumi Yamashita. - Title: Mysterious Boy Volume 1-9 Set - Author: Kazumi Yamashita - Volumes: Complete 9 volumes - Condition: Slight scuffing on the covers, some yellowing. - Language: Japanese - Genre: Seinen Manga Thank you for viewing. This is a complete set of the now out-of-print Mysterious Boy Morning KC edition. There is some age-related deterioration, but there are no problems with reading.