U-TREASURE's Nintama Rantarō collaboration simple ring has returned with a significantly expanded character engraving lineup. Originally featuring 11 characters, the lineup now covers 28 characters from the long-running anime series — a total of 17 new additions. Pre-orders are open from April 21 (Tuesday) to May 19 (Tuesday), 2026, at the U-TREASURE online shop, U-TREASURE Concept Stores in Ikebukuro and Shinsaibashi, and at Animate.
Simple Ring — Product Details
| Pre-order Period | April 21 (Tuesday) to May 19 (Tuesday), 2026 |
| Product Name | Simple Ring |
| Description | Flowing transparent stones shimmer along a simple ring, with a subtly placed shuriken motif as its charm point. The gently tapered wave-line silhouette fits naturally on the finger, creating an elegant look. Available in Silver 925 for casual everyday wear, and Platinum 950 for outstanding durability. The name and motif of a chosen character from Nintama Rantarō — 28 characters in total — are engraved on the inside of the ring. |
| Material & Price (tax incl.) | Silver 925: ¥19,800 / Platinum 950: ¥132,000 |
| Where to Buy | U-TREASURE Online Shop: https://u-treasure.jp/licensor/nintama / U-TREASURE Concept Stores (Ikebukuro & Shinsaibashi): https://u-treasure.jp/information/shoplist / Animate |
Platinum 950
Silver 925
Available Characters
Choose one character from 28 Nintama Rantarō characters and school-related figures for your personalized engraving.
| Year 1 Students | Rantarō Inaradera, Kirimaru Settsu, Shinbē Fukutomi |
| Year 3 Students | Magobē Igasaki, Samon Kanzaki, Sannosuke Tsugiya, Sakubē Tomimatu, Tōnai Urakaze, Kazuma Santanda |
| Year 4 Students | Yashajirō Taira, Kihachirō Ayabe, Mikuēmon Tamura, Ichirō Hamamori, Takamaru Saitō |
| Year 5 Students | Hyōsuke Kukuchi, Kan'uēmon Obama, Hachiēmon Takeya, Saburō Hachiya, Raizō Fuwa |
| Year 6 Students | Monjirō Shioie, Senzō Tachibana, Chōji Nakazaike, Kohēta Nanamatu, Rusamurō Shokumantsu, Isaku Zenhōji |
| Ninja Academy Staff | Hansuke Doi, Toshikichi Yamada |
| Tasogaredoki Castle | Konnaemon Zatto |
Store Information
Sample displays are on view at the U-TREASURE Concept Store Ikebukuro during the pre-order period. Ring sizing is also available at both the Ikebukuro and Shinsaibashi locations.
| Addresses | 〒170-0013 Tokyo, Toshima-ku, Higashi-Ikebukuro 1-23-5, Otomeit Building 4F / 〒542-0083 Osaka, Osaka-shi, Chūō-ku, Higashi-Shinsaibashi 1-19-21, ANGLEONE Building 1F |
| Hours | 11:00 AM to 7:00 PM |
| Closed | Wednesdays and Thursdays (open on public holidays); Year-end and New Year period |
About Nintama Rantarō
Nintama Rantarō is a long-running anime series broadcast on NHK for over 30 years. It follows three young ninja students — Rantarō, Kirimaru, and Shinbē — as they cheerfully, joyfully, and hilariously work toward becoming full-fledged ninja.
Official X (formerly Twitter): https://twitter.com/nep_nintama
