As a 2025 project at the Sekigahara Battlefield Memorial Hall, the sale of colorful layered kirie (paper-cut) warrior seals featuring 11 different warlords, one per month, began in April. The fifth release in August features Mitsunari Ishida. The sixth release in September features Hideaki Kobayakawa. Only 300 seals of each are available, first-come, first-served. A set of these two must-have seals is offered. They are being kept in their original condition after purchase.