This ‘KPop Demon Hunters’ Sword Is the Closest Thing to a Lightsaber for Rumi Fans: Buy Online

A KPop Demon Hunters Rumi sword is set to release on July 1, 2027, in the form of a full-size, interactive sain-geom premium electronic replica. The blade, made of plastic, features a sleek Art Deco design with glowing runes and constellation-like details that mimic the real-life sain-geom, Rumi's primary weapon from the KPop Demon Hunters franchise.

The sword boasts motion-activated lighting and sound effects from the movie, allowing fans to bring their Rumi cosplay to the next level. Preordering the sword for $224.99 includes a sword and a plastic display stand, with four interactive modes, 50+ LEDs, and sound effects inspired by the film. The sword responds to movement, music, and singing, unlocking unique light patterns and matching the rhythm of favorite songs and the user's singing.

A rechargeable battery powers the sword during use, while a USB-C port supports a lit-up shelf display. The sword stands at roughly 40 inches long, providing the scale of a full-size prop at a price that may be justified for fans. KPop Demon Hunters has gained global success since its June 2025 release, with a vast array of merch, including Squishmallows, dolls, Vans shoes, backpacks, and other collectibles.

While waiting for the lifelike, interactive Rumi sword, fans can also shop Amazon's KPop Demon Hunters Nerf swords, which are currently in high demand.