【Updated Price: January 13, 2026】 This is a birthday postcard exclusively for Yuichiro Yamaguchi's fan club. Please note that the signature is printed. While there are no noticeable damages, please understand that this is a paper product stored by an individual, and we ask for your understanding in the current condition. It will be placed in a water-resistant bag, reinforced with cardboard on one side, and shipped in an envelope.