BlueBlack Pen Shop in Korea worked with Diamine to create their City series ink sets, and the 2023 Art Collection ink sets. The three, ten-ink City series sets are themed around great world cities (Seoul, London, and New York) and feature iconic aspects of each city’s culture and life. The three-ink, Art Collection sets are inspired by a famous paintings. There are sets for Van Gogh, Seurat, and Monet. These beautiful sets are available at BlueBlack pen shop (English) in Seoul, or on GMarket Global.