In the present era of this world, belief in a deity was common. The difference was which deity they believed in. Therefore, even if Roy, Pasha, and company didn't understand the meaning of angels in mysticism, they had more or less heard of legends about angels from the priests, bishops, and seniors around them. They knew that they were the servants of deities, and were powerful creatures that were qualified to be addressed as "Him" or "Her." Every action of theirs could create miracles. They were definitely not something ordinary people could compare with.