Yoriichi Tsugikuni is a character in the manga and anime series “Demon Slayer: Kimetsu no Yaiba” created by Koyoharu Gotouge. He is one of the most powerful swordsmen in the series and is regarded as a legend by many characters in the story.

To answer your question, in the story, Yoriichi Tsugikuni is not currently alive. He died centuries ago, and his story is told through flashbacks and memories of other characters.
Yoriichi was born during the Sengoku period in Japan, and he became a Demon Slayer at a young age. He was exceptionally skilled and possessed a unique ability known as the Breath of the Sun, which allowed him to use the power of the sun to enhance his swordsmanship. He became known as the strongest Demon Slayer of his time, and he fought against many powerful demons during his lifetime.
Yoriichi’s life came to a tragic end when he faced Muzan Kibutsuji, the strongest demon in the series. Muzan was able to injure Yoriichi severely, and he later succumbed to his injuries. However, before his death, he passed down his sword, Nichirin, to his descendants, who continued to use it in their battles against demons.
Despite his death, Yoriichi’s legacy lives on in the story. His sword, Nichirin, is a powerful weapon that many of the main characters use in their battles against demons. Additionally, his story inspires other characters, including Tanjiro Kamado, the main protagonist of the series, who looks up to Yoriichi as a role model.
In conclusion, Yoriichi Tsugikuni is not currently alive in the story of “Demon Slayer: Kimetsu no Yaiba.” He died centuries ago, but his legacy continues to inspire and influence the characters in the story. His story is an integral part of the series and plays a significant role in the development of the main characters.