壱与(Fate)
Originally mentioned in [[Fate/Grand Order]]'s 2020 GudaGuda event (2022 in the English server), then introduced as a welfare Ruler-class Servant for the 2022 GudaGuda event (2024 in English). Iyo is [[Himiko (fate)|]]'s disciple and successor to the nation of Yamatai-Koku. Designed by [[toi8]] and voiced by [[Ozawa Ari]].
iyo (fate)