TBH, I expected first that the Bombing of Duro would happen in this chapter, and the conference would be Ch. 45
Finally, we are getting closer to the end of this arc. After this war, Japan will meet the delegates from the Holy Milishial Empire (the visit might composed of 3 chapters: the introduction to the HME, the delegates' arrival and then the tour proper) and if my predictions are correct, the Gra Valkas Arc will start at either end of 2025 or early 2026