Original source: https://www.universal-music.co.jp/jang-keunsuk/news/2021-08-31/
1) HMV: original trading card HMV ver.
2) TOWER RECORDS: original trading card TOWER RECORDS ver.
3) TSUTAYA: original trading card TSUTAYA ver.
4) Other (online) record shops: original trading card
5) UNIVERSAL MUSIC STORE: original trading card UNIVERSAL MUSIC STORE ver.
*for buyers except UNIVERSAL online talk event viewing ticket
6) KOARI: original trading card KOARI ver.
*for the first limited production A, B, C and regular edition buyers only
7) Amazon: Mega-jake (They provide the big CD jacket photo additionally)
8) Rakuten BOOKS: clear file (A4)
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For your reference…
[News] Jang Keun Suk’s new single will be released in August and September: for the second consecutive month
[The details] JKS’ new single ‘Day by day’ to be released on September 15th
[Details] JKS’ online talk event held on September 26th for ‘Day by day’ buyers
[The details] Jang Keun Suk’s new single ‘Day by day’ cover photos
[Info] How to order JKS new single ‘Day by day’ from oversea
[Details-2] Lottery events for CD single ‘amagoi’ and ‘Day by day’ buyers