Sing to burn and cut throws the future (male oc gundam x symphogear)

This is a world where female rain supreme over the males but when unknown life forms come and destroyed the peace as the years go by some thought these life forms will eradicate humanity, but there was hope a group of people have created a weapon that gains power from music and called it symphogear but unfortunately only a few can use it, and it can only be used by females but a certain male name Saber had found or rather it found him giving him the same or even greater power then the symphogear as he named it Gundam oo Exia.