Where it comes from
The line in the source
"productTitle": "強化拡張パック「迅雷スパーク」", "releaseDate": "2018年 7月 6日（金）", "description": "カード5枚入り" Explore / Figure
Record
JP expansion-pack release date, 6 July 2018 | 2018 | year to February 2019 (Mar 2018-Feb 2019) | print-year Apr 2018-Mar 2019
6 July 2018 6 July 2018 | 2018 | year to February 2019 (Mar 2018-Feb 2019) | print-year Apr 2018-Mar 2019
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.