The remaining 18 volumes of the 400 Osamu Tezuka Manga Complete Works were volumes containing Tezuka's Essays, Public Talks, Lectures, Scenarios, Novels, and even guides on how to draw manga.

The volumes are as follows(order based on release):

• Osamu Tezuka Essay Collection Volume 1 - Includes the very famous I am a Mangaka (Boku wa Mangaka) essay from Tezuka.
• Osamu Tezuka Novel Collection
• Osamu Tezuka’s Special Manga Course
• Osamu Tezuka’s Scenario Collection
• Osamu Tezuka Essay Collection Volume 2
• Osamu Tezuka Talk Collection Volume 1
• Osamu Tezuka Essay Collection Volume 3
• Osamu Tezuka Talk Collection Volume 2
• Secrets of Osamu Tezuka’s Manga
• Osamu Tezuka Essay Collection Volume 4
• Osamu Tezuka Talk Collection Volume 3
• Osamu Tezuka Essay Collection Volume 5
• Osamu Tezuka Essay Collection Volume 6
• Osamu Tezuka Talk Collection Volume 4
• Osamu Tezuka Essay Collection Volume 7
• Osamu Tezuka Essay Collection Volume 8
• Osamu Tezuka's How to Draw Manga
• Osamu Tezuka Lecture Collection

Links to the volumes that have their own page are provided. The volume and chapter count will reflect this separation (i.e. Volume count will be 14 instead of 18) in addition to the volumes appearing in the "art" section.

Note:
Order for the art section is as follows:
1-8 - Essays
9 - Scenarios
10-13 - Talks
14 - Lectures

Volumes 383-400 of the Osamu Tezuka Complete Works