Tales of Zestiria the Cross: Saiyaku no Jidai

Synopsis

In recent years, problems regarding atmospheric instability have greatly burdened the Hyland Kingdom, affecting the quality of crops and the citizens' health across the region. One day, the people of Guriel discover an eerie cloud of mist hovering over their town; its severity captures the attention of royal princess Alisha Diphda. She sends her subordinate Crem to investigate the situation, but receives no news from her for two weeks. Worried for Crem's safety, Alisha departs for Guriel herself with her attendants in tow. What awaits them there, however, is an issue of unprecedented scale. (Source: MyAnimeList)