I did change the spelling to Aigis on request. But I since noticed apparently this game is known by Aegis in Japan, though I’ve been unable to track down screenshots that would confirm this. I don’t know the details, bu I’m supposing somewhere the title is rendered in western script. So in short, I changed instances of the title back just to be safe, until I learn otherwise.

As for how to spell Aigis/Aegis. Technically Aigis pronounced with a hard g, as you would pronounce the Japanese kana, is much closer to the classical Greek usage. Modern aegis is pronounced something like eedjes, and is an eventual product of Latin “rebranding” of the word.