User blog comment:B214/Volume 23 discussion blog/@comment-191.214.24.46-20170529011323/@comment-31137559-20170529210817

Actually the only one from the ORC that talked to him was Issei. It was Issei, Vali, Azazel, Saji, and Tannin that used their auras to open the Dragon Gate to summon Midgardsomir.