is there any side story in the novel?

There's a few more volumes!!! This is so far only a third to half of all there is.

But the creator's note is a bit worrisome. It doesn't say anything about a new season or side stories. Would you know what chapter this is in the novel?

If you have a link that would be much appreciated.

Yes, I don't think the artist or publisher ever said they were doing the whole thing. I think this is either the end of vol 1 or 2 of the novel.