Strike the Blood

is a Japanese light novel series by Gakuto Mikumo with illustrations by Manyako, with 22 main volumes published 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 October 2013 and March 2014. 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. A fifth and final season titled Strike the Blood Final was released between March 2022 and July 2022. Plot On Itogami Island, a man-made island south of Japan which has developed into a monster and demon sanctuary, Kojo Akatsuki is suspected of being the Fourth Progenitor, a powerful vampire who could potentially disrupt the balance of power among the world's three ruling progenitors. Kojo was an ordinary high schooler before becoming a vampire and is reluctant to use the powers which he barely controls. Yukina Himeragi is a neophyte Sword Shaman whose first mission is to 'observe' him.