Sparkling sticker(s) were given away to DAIGO MOBILE members on Sat at Nakano Sun Plaza Hall
This sparkling sticker giveaway is to celebrate DAIGO MOBILE's 5th anniversary back when it was 1st set up on 1st April 2013 and here's how the sparkling sticker looks like :
https://twitter.com/akky666/status/1020553039231381504