On April 21, 2011, they had confirmed that the first volume with 12 episodes would be released in February 2012; however, they later announced that the first volume would be released on March 5, 2012.
Pada tanggal 21 April 2011, mereka mengonfirmasikan bahwa volume pertama dengan 12 episode akan dirilis pada bulan Februari 2012; namun, mereka kemudian mengumumkan bahwa volume pertama akan dirilis pada tanggal 5 Maret 2012.