This exhibit was by Spanish Tile Studio (スペインタイルアート工房), and was held at Gallery Camellia (ギャラリーカメリア) in room 503 of the Okuno Building. I liked the color combinations and interesting designs of the ceramics at this exhibition (upper two images of three below).
For more details see the website (Japanese) for Spanish Tile Studio, and also the website for Gallery Camellia.
Spanish Tile Studio:
Gallery Camellia blog entry (Japanese) for this exhibit:
Lyle (Hiroshi) Saxon