"Falling Flower Running Water") is the 45th single by Japanese entertainer Akina Nakamori.

Written by Takashi Matsumoto and Kenji Hayashida, the single was released on December 7, 2005, by Universal Sigma.

[1][2][3] "Rakka Ryūsui" was released a year and five months after Nakamori's previous single "Hajimete Deatta Hi no Yō ni".

It was used as the theme song of the TV Tokyo drama special Tenka Sōran: Tokugawa Mitsuyo no Inbō (天下騒乱〜徳川三代の陰謀, lit.

The B-side is a re-recording of Nakamori's 1986 hit single "Desire (Jōnetsu)".