In the author's comments section on the 26th volume of the manga Owari no Seraph , by Takaya Kagami, Yamato Yamamoto , and Daisuke Furuya, Kagami revealed that the work is heading towards its climax.
The 27th volume of the manga will be released in June.
Kagami, Yamamoto, and Furuya launched the manga in Shueisha 's Jump SQ in 2012.
The manga inspired a anime in April 2015. The anime's 12-episode second season was called Owari no Seraph: Nagoya Kessen-hen , and premiered in October 2015.
Source: ANN
