A Childhood Memory is a Weiß Schwarz card from RWBY RWBY/WX03-016. Compare listings from Singapore Weiß Schwarz sellers on CardJio, then jio them on WhatsApp.
If you do not have a 《Remnant》 character, this card cannot be played from your hand. You may choose 1 《Remnant》 character in your hand, and put it into your waiting room. If you do, choose 1 climax in your waiting room, and return it to your hand.