When I first watched this I did not think much about why Hitomi returned to the first episode and not at a point on Earth where it matches the time she spent on Gaea. All I knew then was that it was for plot purposes and I guess made sense at the time.
Fast forward to now and thanks to keener observation I can see why it makes a lot of sense for them to do that. Recall if you will Episode 17, where Schezar Sr. wishes to see Granny Kanzaki one more time as he lays dying in the snow. When she reappears, he’s confused as to why she looks the same as she did the last time they met, yet surmises such is the case since the power of Atlantis is the human heart. As such, and given how she is unaware of what has transpired since she left (especially since her mom was kinda sorta not worried), Hitomi goes back to where it all began, a place her heart knows and desires.
