The back includes the photos found on the card fronts. You can see the original retail price was 2000 yen.
Before you say anything, yes, there was a perfect game pitched in the NPB after 1994. In 2007, Daisuke Yamai and Hitoki Iwase combined to throw a perfect game in Game 5 of that year's Japan Series against the Nippon Ham Fighters. However, NPB does not recognize combined no-hitters, so as far as the record books are concerned, Makihara was the last pitcher to throw a perfect game.
I initially bought this set with the intention of using one card for my type collection and a couple cards for other collections. However, since it came complete in this nice folder, I haven't broken it up. I'll have to stay on the lookout for singles or another set. (And a real card of Tsutomu Tanaka, who apparently only appears on a Kabaya-Leaf card.)