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It'd be interesting for titles to explore Egyptian mythology more.
Even in Yu-Gi-Oh, you had magic cards which had gods as namesakes (the American adaptation is very localized, "Slifer" represents Osiris), however, there wasn't really any references to Osiris' role over death and resurrection.
"Obelisk" is also not the name of one of the other gods. In the original anime / manga, it's actually the God Soldier of the Obelisk.