Where it comes from
The line in the source
"productTitle": "拡張パック 第4弾「闇、そして光へ...」", "releaseDate": "2001年 4月20日（金）", "description": "カード／10枚" Explore / Figure
Record
JP expansion-pack release date, 20 April 2001 | 2001 | year to February 2002 (Mar 2001-Feb 2002) | print-year Apr 2001-Mar 2002
20 April 2001 20 April 2001 | 2001 | year to February 2002 (Mar 2001-Feb 2002) | print-year Apr 2001-Mar 2002
FiledTaken from a filing, a registry or the company’s own published page.