I purchased this Furokawashiko letter set plus two others --- the A5 Bread set and the A5 Fuji set. I enjoy corresponding with interesting and colourful letter paper, and these sets satisfy on all counts. I write long letters so I use one sheet of the Furukawashiko letter set as the top sheet and add following pages from other paper. In the case of the Furukawashiko lettersets, Yamamoto paper's Eastory or Kin Kaku Den White sheets are a good colour match for the Furukawashiko letter sets. The Yamamoto papers are A4 size so fit perfectly with the Bread and Fuji sets when cut in half. The Sumo Practice set uses 13 x 16 cm sheets, so cutting larger sheets of paper to fit the Sumo Practice format does create some wastage or -- better yet -- a bit more creativity in filling the charming envelope with longer letters. Happy letter writing!