Kamen Rider Revice - "My Brother Is A Kamen Rider" Manga Revelead

It was revealed by a fan who watched the recent showing of the Superhero Senki film that viewers who received the Kamen Rider Revice Secret Book were treated to a manga special. 

This manga is entitled "My brother is a Kamen Rider" and tells the story of Ikki and also of Daiji Igarashi who foreshadowed that he will become a Kamen Rider. 

The secret book also contains information about the characters of the upcoming Kamen Rider Revice TV series.