Gakuto Mikumo has an original creator credit for Strike the Blood.
original creator
TV anime / 2013
OVA / 2016
OVA / 2018
TV anime / 2011
OVA / 2020
series composition assistance
orignial creator
OVA / 2015
TV anime / 2009
original story
OVA / 2022
OVA / 2012