"Ariamaru Tomi" (ありあまる富, The Invaluable) was Japanese singer Shiina Ringo's first single as a solo artist in five years. It was released on May 27, 2009, the same day her debut single was released eleven years earlier. The distributor is EMI Music Japan / Virgin Music.

The single was her first in two and a half years as Ringo Shiina, and her first single in five years as a solo artist. "Ariamaru Tomi" is the theme song of the TV drama Smile of the TBS. Shiina wrote this song for the request from the drama director. It was the first time that she had performed for a TV drama as a solo singer.

"Ariamaru Tomi" is not contained in Shiina's 4th studio album Sanmon Gossip released on June 24, 2009. However, "SG～Superficial Gossip～" is contained in the vinyl record Saturday Night Gossip (released on August 26, 2009) and "Ariamaru Tomi" was eventually released in her album Hi Izuru Tokoro (released November 5, 2014).

The song was performed live by Sheena as a part of her band Tokyo Jihen at their appearance at the Countdown Japan festival in 2009, and during the band's Ultra C tour in 2010.

All lyrics written by Ringo Shiina; all music composed by Ringo Shiina and additional music by Tomotaka Imamichi. #1 arranged by Tomotaka Imamichi, #2 arranged by Ryota Nozaki/Jazztronik.

Personnel details were sourced from "Ariamaru Tomi"'s liner notes booklet.

Performers and musicians

Technical and production

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