この日を忘れない is a Weiß Schwarz card from ダ・カーポ vs リトルバスターズ！ DC/WE30-19. Compare listings from Singapore Weiß Schwarz sellers on CardJio, then jio them on WhatsApp.
【AUTO】 When this card is placed on your climax area from your hand, choose up to one yellow card in your waiting room, put it into your stock, and all of your characters get +1 soul until end of turn.