In May 2012, the convenience store Lawson had a campaign for the TV anime Natsuiro Kiseki (夏色キセキ). There were five different clear files given away for free. You can choose one clear file when you buy two of the specified candies and chocolates.

The Natsuiro Kiseki clear files have the animated characters on the front, and the seiyuu group Sphere (スフィア) on the back. There are five different anime pictures for the front of the file. But there are only two different pictures of Sphere. One is portrait orientation and one is landscape.

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