expression, godan verb (-u)
read volume by volume; keep reading eagerly
Used when someone reads through a series of books or a long work, moving from one volume to the next without stopping. Often implies being engrossed.
彼はその小説に夢中で、巻を追うように読み進めた。
He was so absorbed in the novel that he read it volume after volume.
面白
It was so interesting that I ended up reading one volume after another.