Well, I suspect the story's plot of finding Rakua, may either carry over into the next upcoming arc after "Rayquza Rising", which may start in April of 2025, or start up during Fall of 2025 and conclude toward December of 2025.We’re 11 episodes into this arc, in a show whose story arcs never last more than 20+ episodes.
There’s definitely no way we’re finishing this plotline until next arc at the bare minimum.
Plus, if it was really the end, they would’ve advertised it as such by now,
However, I would assume the next story arc, after "Rayquza Rising", will likely be a "side adventure" arc, like the training arc and the story's plot of finding Rakua may conclude in a final arc that will happen in Fall of 2025 and conclude on December of 2025.
Whatever happens, I have a hard time imagining if the anime writers are planning to keep this story (Horizon) going until 2026, like some fans suspect, especially when a great portion of the story's plot (Terapogas memory, the collection of the six heroes, and the location of Rakua) will have possibly been fulfilled by 2025.
Unless, the anime introduces an epilogue, like what was done with the previous story in 2019, it feels as if the horizon series maybe reaching its climax by December of 2025. Just doesn't seem to be enough plot elements in the story to keep it going for very long. Feels like the story was intended to be a short adventure.