The August issue of Hero's Inc.'s Monthly Hero's magazine revealed on Monday that manga creators Eiichi Shimizu and Tomohiro Shimoguchi will launch a new manga titled Dragon Circus on the Flat Hero's website on July 19. Flat Hero's posted an image for the manga on Twitter on Monday.
[DRAGON CIRCUS -ドラゴンサーカス-]
— 【公式】ふらっとヒーローズ (@HEROS_flat) July 1, 2019
The duo are best known for both the Linebarrels of Iron and Ultraman manga. The duo launched Linebarrels of Iron in 2005 in Akita Shoten's Champion RED magazine, and ended it in April 2014. Akita Shoten published 25 volumes for the series. The manga inspired a 24-episode anime in 2008 that FUNimation Entertainment released in North America in 2010.
The duo launched their Ultraman series based on Tsuburaya Production's most famous live-action special-effects hero in Monthly Hero's magazine in 2011. Shogakukan published the manga's 13th compiled book volume on March 5. Viz Media released the manga's 12th volume on June 18. The manga inspired a 3D CG anime by Kenji Kamiyama, Shinji Aramaki, and Production I.G that premiered globally on Netflix on April 1. The anime will get a second season.
The duo launched the Getter Robo Devolution (Getter Robo Devolution – Uchū Saigo no 3-bunkan) manga in Akita Shoten's Bessatsu Shōnen Champion magazine in December 2015. The manga ended its serialization on June 12. Seven Seas Entertainment is releasing the manga in English.
Source: Monthly Hero's August issue, Flat Hero's' Twitter account