Sorry for the double post, but covers for the single are out at GReeeeN World (a Japanese fansite):
http://www.geocities.jp/greeeen_worl...single/015.htm
The top cover with the green book is the CD+DVD version, and the cover below that with the girl crying a tear is the CD only version. I really like the CD+DVD version, the book looks kinda neat, I wonder what the meaning is behind the book, like what does it represent or symbolize.
Also, here's the radio rip of Misenai Namida wa, Kitto Itsuka: