User blog comment:XxMapSyrxx/If you follow Himaruya sensei's blog vehemently..../@comment-1975482-20101001063158

So I've got it all Himaruya says in the recent blog post.In September 30 post it said "I'm at work of Chibi characters. Characters now have increased so much that I find them colourful when I put them together." That means a set of playing cards featuring chibi characters, which will be one of the extras of the artbook coming. I expect various characters featured on each of the playing cards, so there will be 53 characters!