土屋アンナ
is the fourth single by Japanese singer Anna Tsuchiya, released on 10 January 2007 under the pseudonym "Anna Tsuchiya inspi' Nana (Black Stones)" on the Mad Pray Records Label, a sub-label to Avex. It spent six weeks in the Oricon singles chart, reaching #7 on 22 January 2007. The song was used as an ending theme to the anime-adaption of the Japanese manga "Nana". It was Tsuchiya's second single used in the series, the first being "Rose".