[Sunred]

Kodansha, the publisher that gave us manga titles such as Seven Deadly Sins, Tsubasa Chronicle, etc. has been publishing serial mooks(magazine+books) about 21st century super sentai teams from January 25th 2017 to February 23rd 2018.
Now, Kodansha has decided to go back to the 20th century and give fans the same quality of info about the multicolored hero squads from 1975 ~ 2000. This serialization will be available bi-weekly every 10th and 25th with the exception of the first issue in all Japanese book stores.

Kicking off the serialization will be THE TEAM THAT STARTED IT ALL, Himitsu Sentai Gorenger, which will be on sale in Japan March 24th going for 630 yen(tax not included).
The mook will cover:
1. Sasaki Isao's look back at the theme song
2. Tsuyoshi Nonaka's study on the designs
3. A look at the Poppy toy advertisements

- Special Feature: A look back at the Kenyu Ono Association's "super sentai action" by Masaru Okada(suit actor of Kamen Rider 1 ~ Stronger)
- Explanation of the show
- A look at the world & items of Gorenger
- Info on the main characters
and many more


source reference: http://ent.kodansha.co.jp/sentai/

narration of youtube promo video by Haruki Hamada(Hiryu Tsurugi/Change Dragon from Changeman)