Talk:Seal Exchange Corner 2/@comment-2601:404:C200:4A57:7096:17AD:1A8E:E93-20180829030632/@comment-91.38.70.126-20180829032645

You have to manually open the Koban boxes. Go to the Shop and then click on the lowest tab. It'll take you to your inventory where you'll find all unopened Koban boxes that you own.