Strike the Blood (ストライク・ザ・ブラッド, Sutoraiku za Buraddo) is a Japanese light novel series by Gakuto Mikumo with illustrations by Manyako, with 22 main volumes serialized between May 2011 and August 2020. A manga adaptation began serialization in June 2012 in ASCII Media Works's Dengeki Daioh. A 24-episode anime television adaptation by Silver Link and Connect aired between 4 October 2013 and 28 March 2014 in Japan. An original video animation series titled Strike the Blood II was released in four volumes between November 2016 and May 2017. A third series titled Strike the Blood III was released from December 2018 to September 2019. A fourth series titled Strike the Blood IV was released from April 2020 to June 2021.