Where it comes from
The line in the source
"productTitle": "拡張パック「メガロキャノン」", "releaseDate": "2013年 3月15日（金）", "description": "カード／5枚" Explore / Figure
Record
JP expansion-pack release date, 15 March 2013 | 2013 | year to February 2014 (Mar 2013-Feb 2014) | print-year Apr 2012-Mar 2013
15 March 2013 15 March 2013 | 2013 | year to February 2014 (Mar 2013-Feb 2014) | print-year Apr 2012-Mar 2013
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.