As of my knowledge cutoff in September 2021, Sasuke Uchiha from the "Naruto" series primarily wields a sword in his post-war appearances and in the sequel series "Boruto: Naruto Next Generations." There are a few reasons why Sasuke starts using a sword:
- Versatility: Sasuke's sword provides him with additional versatility in combat. While he is a highly skilled user of ninjutsu and genjutsu, having a sword allows him to engage in close-quarters combat and enhance his fighting style.
- Chakra-Conductive Properties: Sasuke's sword, the Kusanagi, is a legendary weapon known for its ability to channel and amplify chakra. By utilizing the sword, Sasuke can infuse it with his chakra to enhance the power and range of his attacks.
- Symbolic Importance: The sword also carries symbolic significance for Sasuke. It is a reminder of his heritage as a member of the Uchiha clan and serves as a connection to his past. Additionally, the sword represents his commitment to protecting the village and his loved ones.
It's important to note that developments in the "Boruto" series or subsequent materials beyond my knowledge cutoff may introduce new information or changes to Sasuke's character and weapon usage. For the most up-to-date and accurate information, it's recommended to refer to the latest episodes, manga chapters, or official sources.