Three major Japanese stationery manufacturers simultaneously launched ancient coin design product lines in May 2026. Targeting university exam students and working adults under the theme "Learning and Fortune," a total of 48 SKUs featuring designs from Kanei Tsuho, Ichibu-kin, and Tempo Tsuho coins — applied to mechanical pencils, erasers, and notebooks — are now available at approximately 8,000 stores nationwide. Combined first-week sales exceeded 500,000 units, and with viral social media momentum, production has been ramped up into the second week and beyond.