One Volume
First Volume
noun
One scroll is one scroll back in the day, but now it refers to books and means one volume.
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well. いち goes to いっ.
このマンガ、一巻しか持っていないんだよ。
I only have one volume of this manga.
この小説、一巻はすごく面白かったんだけどね。
The first volume of this novel was really interesting, but you know…
もちろん一巻から最新巻まで全部揃ってるよ！
Of course, I have all the volumes from the first to the latest!
一巻では、全ての引用に脚注がつけられ出典が記されています。
In the first volume, all sources are cited in the footnotes.