Most volumes published for a single chapter book series written and illustrated by the same author
- Who
- Yutaka Hara
- What
- 71 total number
- Where
- Japan (Chiyoda)
- When
- 12 July 2022
The most volumes published for a single chapter book series written and illustrated by the same author is 71, and was achieved by Yutaka Hara (Japan) with "Kaiketsu Zorori" series published by Poplar Publishing Co. Ltd. on 12 July 2022.
The Kaiketsu Zorori series was first published in November 1987 and has been read by many children for 35 years.