u/Few-Surround-7289

If we do not consider the waves in the world of Kizuna in volume 9 of the light novel, which were shown very briefly or only in words at all (the wave that Kou called), then the wave of Cal Mira Archipelago was the last in history. Who read the web novel, was the situation different there?
By «full» I mean long for several chapters, as in the first and third volumes.
And although in volume 10-20 aliens appeared who use waves for their own purposes, but in my opinion, these are no longer the same waves as before. Maybe it's nostalgia, but I don't like the humanization of the main danger of the novel.