Square Enix introduced Dragon Quest X: Waking of the Five Tribes Online by introducing five different races. The twist is you actually begin the game as a human living in Etene Village.
Jump explains the protagonist (which you get to name) is a heaven sent child with a special mission. The village guardian Kame-sama (that’s Mr. Turtle) explains this to the and says the village is a nursing ground.
He guides the hero to a shrine with a mural showing the downfall of mankind and statues of the five tribes. It appears this temple is a connection between the two worlds.