BLOOD+ AA血战; Blood+ Adagio; BLOOD+A; Кровь+ А; ブラッド・プラス アダージョ; 블러드 플러스 아다지오

The year is 1916. Saya and Hagi are entrusted with their first mission in Russia at the turn of the 20th century. The grand battle between Men and Chiropterans ensues in the Romanov Imperial court on the night before the Revolution!