Translated from the Japanese.
Reads manga-style, right to left and back to front.
Each volume collects two volumes of the original manga.
v. 4. Vols. 7 & 8
v. 5. Vols. 9 & 10
v. 6. Vols. 11 & 12.
OBNB doesn't sell books, but you may be able to find a copy at one of these websites:
Gravitation collection by Maki Murakami. ISBN 9781427816580. Published by Tokyopop in 2009. Publication and catalogue information, links to buy online and reader comments.
