This is a set of coffee cups by Yusuke Aida, known for his ceramic murals that adorn the walls of public buildings throughout Japan. Later in his career, he became the president of Tohoku University of Art and Design. His main work (so to speak) consists of large-scale pieces like ceramic murals, so these coffee cups are considered rare. I believe they were made using the neriage (marble-like) technique. While there are many products with painted designs, these patterns offer a fresh perspective. I've decided to lower the price today. It will be 28,000 yen. I will ensure the packaging is secure.