yuuki_yuuna_wa_yuusha_de_aru:_yuusha-shi_gaiten
Yuuki Yuuna wa Yuusha de Aru: Yuusha-shi Gaiten (結城友奈は勇者である 勇者史外典, lit. Yuuki Yuuna is a Hero: Hero History Apocrypha) is a 3-part spin-off light novel based on Nogi Wakaba wa Yuusha de Aru.
Parts (in order):
* Uesato Hinata wa Miko de Aru (Uesato Hinata is a Miko)* Fuyou Yuuna wa Yuusha de Nai (Fuyou Yuuna is Not a Hero)
* Karasuma Kumiko wa Miko de Nai (Karasuma Kumiko is Not a Miko)