One of the interesting tidbits that fell out of my research on manga that got anime in 2011 was the surprising coincidence of high (1500th or better) myanimelist rankings and increased manga sales. At least, it was intriguing enough that I decided to delve into it further, pulling sales figures for the 20 manga which both got anime and charted on the Oricon rankings in 2012. The full analysis is coming, but, short version, there’s a 90-plus percent that that correlation is a very real thing, indicating a strong link between the opinions of myanimelist users and the Japanese manga-buying public, to the extent that I might even be able to plug it in to my sequel probability equation and get the “can’t predict loss-leader effects” monkey partially off the sequel probability equation’s back.

All of which makes Thermae Romae, which presided over a 100k+ increase in week one sales of its manga while posting a piddling rank of 2248th on myanimelist, a case worth a closer look.* Is the jump in average week-one sales from 222,000 volumes for 3 and 4 to 323,000 volumes for 5 and 6 indicative of the effects of the anime, which began and ended between the releases of 4 and 5? Continue reading →