In what year was the album “SORA” released by JUJU?

In what year was the album “SORA” released by JUJU?: The album “SORA” was released in 2013 by JUJU, featuring 3 tracks.
What is the most successful song from the album “SORA” by JUJU?: “空” is the biggest hit from the album “SORA” by JUJU.

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