Tracklist

1	こころ	5:25
2	蒼の頃	6:32
3	次郎さん	6:53

Notes

Rika Ishii‘s second single after leaving Hello! Project, and her last released under the record label BM.3. It was released over three years after her previous single, Kotoshima.

Unlike her previous release, this was released as her major debut single, available for sale everywhere.

Songs from this single was used in the horror movie zoku, which also has Rika Ishii in one of the main roles.

蒼 (ao) literary means Blue / Green, but can also mean Unripe / Immature / Young.