Progesterone (abbreviated as P4), also known as pregn-4-ene-3,20-dione, is an endogenous steroid and progestogen sex hormone involved in the menstrual cycle, pregnancy, and embryogenesis of humans and other species.
Volumes 9 and 10 the Sailor Moon Manga Complete Editions are now out. Last week, March 25th, volumes 9 and 10 of the Sailor Moon Manga Complete Editions were released in Japan. Volume 9 features Endymion and Serenity on the cover while volume 10 features all 10 Sailor Guardians.
As of May 2013, over two million volumes have been sold. The first volume was ranked 22nd on the Tohan charts between June 4 and 10, 2012. The second volume was ranked 18th on the charts between August 6 and 12, 2012, and the third volume was also ranked 18th between October 8 and 14, 2012. Additionally, the series was ranked 4th out of a total of fifteen comics recommended in Honya Club's Zenkoku Shoten'in ga Eranda Osusume Comic 2013 ranking.