Cross of Destiny (Cross Ange x Male Reader)

A Boy Named Seth Sifuguska just turned 16 when his family was killed by an unknown machine, he vowed to destroy. But his quest for revenge was cut short when he was taken to the island of Arzenal, where he was forced to fight Flying creatures called DRAGONs. Couple Months Later, a Norma princess named Angelise was also conscripted as a fighter. At first, Seth didn't like her, but he quickly warmed up to her, given that he had no friends-he was the only male on the entire island. After acquiring a special Gun-Mail unit called Destiny, Seth resolved to use its power to wipe out the DRAGONs and finally take revenge on the machine that killed his family, the man behind it all, "Embryo..."