"Deepness" is a song recorded by Japanese singer Misia. It was co-written by Misia and Jun Sasaki and produced by Misia. "Deepness" was released as a single by Ariola Japan on November 7, 2012. It is the theme song to the TBS drama series Ōoku: Tanjō - Arikoto / Iemitsu-hen, starring Masato Sakai and Mikako Tabe.
