What is the most successful song from the album “After Love ~First Boyfriend~/Girlfriend - Single” by Crystal Kay?

In what year was the album “After Love ~First Boyfriend~/Girlfriend - Single” released by Crystal Kay?: The album “After Love ~First Boyfriend~/Girlfriend - Single” was released in 2009 by Crystal Kay, featuring 5 tracks.
What is the most successful song from the album “After Love ~First Boyfriend~/Girlfriend - Single” by Crystal Kay?: “After Love ~First Boyfriend~” is the biggest hit from the album “After Love ~First Boyfriend~/Girlfriend - Single” by Crystal Kay.

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