さいこうのなつやすみ is a Weiß Schwarz card from Summer Pockets SMP/W60-022. Compare listings from Singapore Weiß Schwarz sellers on CardJio, then jio them on WhatsApp.
If you have Character with 「しろは」 in its name and Character with 「羽依里」 in its name, draw up to 1 card, place up to 1 card from your top Clock into Waiting Room, send this card to Memory.
This card was printed in Japanese only; the English text above is an unofficial community translation.