sentence: members yugiri ( 夕霧 ) - vocals mayu ( まゆ ) - lead guitar nao ( なお ) - rhythm guitar rei - bass kazami ( 風弥 ) - drums & piano discography studio albums birth ( august 11 , 2010 ) love ( august 11 , 2010 ) bless ( june 29 , 2011 ) siren ( october 5 , 2011 ) air ( january 11 , 2012 ) tragus ( june 18 , 2014 ) live albums birth or live ?