Nintama Rantarō Simple Ring Returns with 28 Character Engraving Options, Including 17 New Additions
U-TREASURE's Nintama Rantarō collaboration simple ring is back with an expanded lineup of 28 character engravings — 17 more than before. The wave-line ring features a shuriken motif and sparkling stones, available to pre-order from April 21 to May 19, 2026.