Nogi Wakaba wa Yuusha de Aru

The narrative begins in 2018, the early years of the Divine Era, 300 years prior to the main timeline. Six individuals become the first Hero Team, consisting of Nogi Wakaba, who is the ancestor of Nogi Sonoko, along with Uesato Hinata, Takashima Yuna, Koori Chikage, Doi Tamako, and Iyojima Anzu.