"Ninth of March" (Edit Ver.) (Sangatsu Kokonoka, ３月９日) is a background theme song of Tsuki ga Kirei, sung by Nao Tōyama.
The CD will be released on 5 July 2017. It will contain 34 tracks.
- The original song of "Sangatsu Kokonoka" was sung by a band called Remioromen