"Thoughts Across Time" is the theme song composed by Japanese composer Kaoru Wada for the animated film *Inuyasha: Affections Touching Across Time*, which was released on December 15, 2001. Wada drew inspiration for the piece from the emotional bond transcending time between Inuyasha and Kagome Higurashi; a piano concerto version of the song appears in scenes where the two share a deep spiritual connection.