Kokoro no Hoshi (心の星, Heart's Star) is Becky♪♯'s debut album.

[1] For the months of March and April 2010, Becky was on tour to promote this album.

[2] The album comes as a "special price" edition; a standard edition with a special photo booklet; and a deluxe edition with the photo booklet, a mini-scrunchie designed by Becky, and a postcard to mail in for information on the live tour Becky is performing for the album.

Her favorite songs off of the album are "Yami o Tsukinukete Yuku" and "Toki no Naka ni".

[3] Kokoro no Hoshi debuted at #12 on the weekly Oricon albums chart, selling 11,802 copies in its first week.