In what year was the album “Monster” released by Girugamesh?

In what year was the album “Monster” released by Girugamesh?: The album “Monster” was released in 2013 by Girugamesh, featuring 12 tracks.
What is the most successful song from the album “Monster” by Girugamesh?: “Drain” is the biggest hit from the album “Monster” by Girugamesh.

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