Kawari Kabuto: Sengoku no Cool Design

Second-hand product (this book is out of print), good condition
Title : 変わり兜:戦国の COOL DESIGN 
Author: Hashimoto Mari
Pages: 125
Release date: 20/09/2013
Language: Japanese
Dimensions: 21,4 x 16,6 x 1 cm

This beautiful illustrated book will show you the design evolutions of helmets and armors from the Sengoku period (1467-1603) warriors. With its numerous pictures, you will enjoy seeing the most kawaii helmets of history, to the point of wanting to see them yourself in the museum in which they are exposed.

This book is no longer published, it's a collector product for all lovers of samurai. Although it is in Japanese, the many photos make this book very pleasant.
You can also automatically translate the text by taking a simple photo with the Google Translation application (available here for Android, here for Iphone).