Hidan no Aria: Scarlet Fiesta

Aria the Scarlet Ammo: Scarlet Fiesta is the 10th Anniversary special book for the Hidan no Aria series released on March 25, 2019. This book contains:
 * A new side-story.
 * Recording of drama CD by the creator and author Chūgaku Akamatsu.
 * Special art from Shogako Tachibana, mangaka of the spin-off series, Hidan no Aria AA.
 * Special interview with the author and creator Chūgaku Akamatsu and illustrator Kobuichi.

Trivia

 * Fiesta means party in Spanish.