Where it comes from
The line in the source
pg=853 | hitCnt 138 | 強化拡張パック「バトルリージョン」 | 2022年 2月25日（金） Explore / Figure
Record
Cards in set (card-search hitCnt), released 25 February 2022
138 cards Released 25 February 2022
ReportedReported by a reliable secondary source, or read carefully from filed documents.