Yuuichirou Higashide is credited as Original Creator of Fate/Apocrypha and also has a Series Composition credit on the series.
original creator
TV anime / 2017
series composition
script (ep 7)
TV anime / 2016
script (eps 3, 6)
original story
Movie / 2020
TV anime / 2024
TV anime / 2019
ONA / 2020
script
Short TV anime / 2023