Why does the Earth Ji look like a princess?

Earth Ji looks like a princess because of the plot setting. In fgo game, Earth Ji is the will of the planet, and Gaia occupies the state of princess's body. Earth Ji is a princess who floats up with her consciousness, but she is still a princess in essence. The princess and Tuji are the same person, so Tuji and the princess look the same. Earth Ji is a brand-new follower of fgo's seventh anniversary.