Naruto Shippuden Episode 354 timestamp: 18:00/23:10
What is the music that plays in the background?
Anime & Manga Stack Exchange is a question and answer site for anime and manga fans. It only takes a minute to sign up.
Sign up to join this communityI believe this is Naruto Shippuuden Soundtrack II, track 25, "Shirobae" (translated title: "The Rain Stops").
It sounds like a slower, calmer, guitar version of "Guren", the theme that appeared a lot in many of the Yuukimaru scenes back during that Three-Tails filler arc.