In what year was the album “Rainbow Syndrome” released by Rainbow (K-pop)?

In what year was the album “Rainbow Syndrome” released by Rainbow (K-pop)?: The album “Rainbow Syndrome” was released in 2013 by Rainbow (K-pop), featuring 7 tracks.
What is the most successful song from the album “Rainbow Syndrome” by Rainbow (K-pop)?: “Kiss Me” is the biggest hit from the album “Rainbow Syndrome” by Rainbow (K-pop).

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