Update: The project has been revealed.
The official Twitter account of MF Bunko J has announced some news regarding Chuugaku Akamatsu and Kobuichi’s light novel series Hidan no Aria (Aria the Scarlet Ammo). The light novel print revealed that a new project would be announced this Summer, where a big presentation will be held.
大人気シリーズ『緋弾のアリア』最新刊の情報をお届けです！ 新プロジェクトの詳細発表は夏頃を予定おります！ みなさんお楽しみに！（新橋） MF文庫J編集部ブログ- 【特典情報】『緋弾のアリアⅩⅦ』【重版情報】 http://t.co/z4i0ay0UKD
— ＭＦ文庫Ｊ編集部＠毎月25日発売 (@MF_bunkoJ) April 25, 2014
Hidan no Aria is a light novel series written by Chuugaku Akamatsu with illustrations from Kobuichi. The series began in Media Factory’s MF Bunko J in August 2008. To date there are 16 volumes with the 17th volume releasing on the 28th, and the series has sold over 2 million copies. A manga adaptation began serialization in 2009 by Yoshino Koyoka. A anime adaptation aired from April 2011 till June that year, and was animated by J.C.Staff. An OVA followed the series in December 2011.
Here is a synopsis from MAL:
Kinji is a junior at a high school for mercenaries. He just wants to be normal, but his secret condition—he turns into an ace killer when he’s turned on by the female form—triggers a fiery transfer student’s unrelenting desire to make him her partner.
The new Hidan no Aria project, whether it is a new light novel, or anime, will be announced next season.
“Hidan no Aria”, image and all associated brands and titles © 2014 Chuugaku Akamatsu, Kobuichi, Media Factory and J.C. Staff