@themusicman500:
We'll probably never know, but let's hope it is.
As for the hieroglyphics, it's probably a prophecy about how the Power of Yuri and giant mechas will save the world or something (or about some Shadow Games with cards).
I honestly can't handle how adorable and wholesome this couple is. They need a series. Like, a long one, about them doing completely normal stuff and being lovey dovey.