Fukai Mori is a song by Japanese band Do As Infinity, best known as an ending theme for the anime Inuyasha. Its gentle acoustic sound and wistful vocal made it a favourite in early anime fandom, where it appeared in fan videos, tribute edits, and AMVs shared online. As Inuyasha remained popular through reruns, streaming, and nostalgia-driven rewatches, the song kept circulating among fans. Today it is still used as shorthand for the series’ quieter, emotional moments, especially in montages that look back on its characters and story.