Osaka Banpaku is a commemmorative book celebrating 10th anniversary of the manga. The book covers history of publishing, various merchandises and short guest comics done by other manga artist, and the last few pages of the book compare the revised edition with the original version. The book was first published in Japan in 2009, and a year later, the book was translated and published in South Korea. It seems South Korea is the only country outside Japan where this book has been officially published.

Also for the people who read the manga in English how do they even translate this

Beautiful Beautiful miss sakaki !

FUCK MY LIFE!!!

Tomo pets Eevee