This set is published in the bunkoban format, A6 in size (148mm x 105mm, a bit less than 6" x 4") so they are the smallest volumes in my collection. The first 4 volumes are FR (two volumes per original LOTR Book, 1 and 2), the next three are TT (two volumes for Book 3 and one volume for Book 4), and the last two are RK (one volume per Book, 5 and 6).
指輪物語 (Japanese A), purchased on-line from goodlifeyourlife, Osaka on ebay in 2021 (paperback)
Tolkien, J. R. R., 指輪物語, trans. by Teiji Seta and Akiko Tanaka (Hyoronsha, 2002), 1, 旅の仲間 上1. ISBN: 4-566-02362-1
——, 指輪物語, trans. by Teiji Seta and Akiko Tanaka (Hyoronsha, 2002), 2, 旅の仲間 上2. ISBN: 4-566-02363-X
——, 指輪物語, trans. by Teiji Seta and Akiko Tanaka (Hyoronsha, 2002), 3, 旅の仲間 下1. ISBN: 4-566-02364-8
——, 指輪物語, trans. by Teiji Seta and Akiko Tanaka (Hyoronsha, 2002), 4, 旅の仲間 下2. ISBN: 4-566-02365-6
——, 指輪物語, trans. by Teiji Seta and Akiko Tanaka (Hyoronsha, 2002), 5, 二つの塔 上1. ISBN: 4-566-02366-4
——, 指輪物語, trans. by Teiji Seta and Akiko Tanaka (Hyoronsha, 2002), 6, 二つの塔 上2. ISBN: 4-566-02367-2
——, 指輪物語, trans. by Teiji Seta and Akiko Tanaka (Hyoronsha, 2002), 7, 二つの塔 下. ISBN: 4-566-02368-0
——, 指輪物語, trans. by Teiji Seta and Akiko Tanaka (Hyoronsha, 2002), 8, 王の帰還 上. ISBN: 4-566-02369-9
——, 指輪物語, trans. by Teiji Seta and Akiko Tanaka (Hyoronsha, 2002), 9, 王の帰還 下. ISBN: 4-566-02370-2
ホビット, ゆきてかえりし物語 (Japanese [H] A), purchased on-line from ninja japan shop on ebay in 2025 (paperback
Tolkien, J. R. R., ホビット, ゆきてかえりし物語, trans. by Shiro Yamamoto (Hara Shobo, 2012), 1. ISBN: 978-4-562-07000-8