The campaign goes on for 2 weeks, from the May 10th to 23rd. Each week bring new types of goods to the konbini, with dozens already on sale at various stores.
2ch calls this "Day of the Decisive Battle", with images of how the Lawson konbini would look like;
If you'd like to view all available merchandise, check out their online catalogue at their official website;
To the battlefield...
Spoils of War...
Seen this plushie going for ￥20,000 at certain auction sites.