In the "Boruto" series, Sasuke Uchiha, a prominent character from the "Naruto" franchise, wields a sword called the "Sword of Kusanagi." The Sword of Kusanagi is a legendary weapon in the Naruto universe and has been associated with Sasuke since his earlier appearances in the series.

The Sword of Kusanagi is known for its unique properties, including the ability to extend and retract its blade. It is also said to be incredibly sharp and durable. Sasuke primarily uses the sword for close combat and as a complement to his various ninja abilities and techniques.

It's worth noting that Sasuke's Sword of Kusanagi in the "Boruto" series may have undergone some modifications or enhancements compared to its earlier iterations in the "Naruto" series. The specific abilities and characteristics of the sword may have evolved or been further explored in the ongoing storyline.