https://m.weibo.cn/detail/4995095688645266#comment (It's about what the final game of Calvard Republic will be about. This news also covers the entire Kiseki series. I translated it with Google Translate and read it. Must be read.)

https://noisypixel.net/the-legend-of-heroes-kai-no-kiseki-farewell-o-zemuria-feature-class-vii-similar-structure-to-reverie/ (This news is directly in English. However, it contains additional information regarding Kai. Be sure to read this too.)

Things got pretty heated. After this game, there will be another arc that completes the series. Then there will be a final arc that connects the story of the entire series to the future. Considering that the story goes through Sept-Terrions, it will be like this. The president had already made a statement about the status of the series. We will get smaller games like Crossbell and Sky. Kai is the last Calvard game. After the Sept-Terrion of Time, what remains is Sept-Terrion of Water and Sept-Terrion of Wind.

https://noisypixel.net/the-legend-of-heroes-kai-no.../ (Also, a new and important mechanic has been introduced. I recommend you look.)