Where it comes from
The line in the source
"description": "カード／11枚(うち、キラカード1枚)" Explore / Figure
Record
Cards per pack (JP), pack at release 8 July 2009
11 cards Pack at release 8 July 2009
FiledTaken from a filing, a registry or the company’s own published page.
Found in one pass only. The research team reads every source twice, independently; this record turned up in one reading but not the other, so treat it as less certain than its grade.