Earth Princess? No, It's Fujimaru Ritsuka

A dream in which he encountered a blonde princess changed Ritsuka Fujimaru. That was the girl who called herself [Star Brain: Archetype: Earth]. When he woke up from the dream, Ritsuka Fujimaru found that he had turned into her. Carrying this unique and strange encounter and fate, the girl became the master of Chaldea as fate would have it. [Grand Time Temple] "Stand back, Mashu, let me do it." The blonde girl who was like a humanoid missile faced the Demon King who wanted to return to the origin of the earth, and tore the ground of the Grand Time Temple with one claw. Her body began to slowly turn into starlight, and the shimmering body of light faced the despair of human evil. "Let me crush your trampling on the will of mankind, Goetia!