Complex sentence: Volume 57's print run of 3 million copies in 2010 was the highest first print for any book of any subject in Japan-a record that was broken several times by subsequent volumes and currently held by Volume 67's 4.05 million initial printing in 2012.
Split into simpler sentences: Volume 57's print of 3 million in 2010 was the highest first print for any book in Japan, not just manga. A record that was broken several times by subsequent volumes and currently held by 67's 4.05 million initial printing in 2012.