Seraph of the End: Guren Ichinose: Catastrophe at Sixteen

Owari no Seraph: Ichinose Guren, 16-sai no Catastrophe
終わりのセラフ 一瀬グレン、16歳の破滅
Seraph of the End—Ichinose Guren: Catastrophe at Sixteen
Seraph of the End: Guren Ichinose - Catastrophe at Sixteen
Seraph of the End: Ichinose Guren: Catastrophe at Sixteen
Последний Серафим: Катастрофа шестнадцатилетнего Глена Ичиносе
종말의 세라프 - 이치노세 구렌, 16세의 파멸
終わりのセラフ 一瀬グレン、16歳の破滅

Adaptation

novel
2013
Publishers:
The apocalypse is not only near, but a certainty. Set before the event and the aftermath detailed by the hit manga, this stand-alone prequel light novel series chronicles the inexorable approach of the reign of vampires. Witness the trials of Guren Ichi­nose, who must hide his true strength even as he is trampled on at an academy for the insufferably privileged. (Source: Kodansha USA)