Originally Posted by
Yrusama
I used to have it backwards. I thought the Seekers of the Sun had the round pupils because they were evolved to handle more light, whereas the Keepers of the Moon adapted to limit their light intake. But I suppose the other way around makes just as much sense. Keepers of the Moon sleep during the day because they can't handle the light, whereas Seekers of the Sun sleep at night because they can't see as well in the dark. Unfortunately for Keepers, the rest of Eorzea makes heavy use of lamps and flashy magic.