Uta no☆Prince-sama♪ Movie: Maji Love Kingdom

The protagonist Qin Chen, who was originally the top genius in the military domain, was conspired by the people to fall into the death canyon in the forbidden land of the mainland. Qin Chen, who was inevitably dead, unexpectedly triggered the power of the mysterious ancient sword. Three hundred years later, in a remote part of the Tianwu mainland, a boy of the same name accidentally inherited Qin Chen’s will. As the beloved grandson of King Dingwu of the Daqi National Army, due to the birth father’s birth, the mother and son were treated coldly in Dingwu’s palace and lived together. In order to rewrite the myth of the strong man in hope of the sun, and to protect everything he loves, Qin Chen resolutely took up the responsibility of maintaining the five kingdoms of the world and set foot on the road of martial arts again.

Nanako is a young girl who unexpectedly acquires supernatural powers and at the same time loses her past memory. By accident, a scientific genius called Marlow, is present when she acquires her powers. Marlow is an industrious high school boy with extraordinary ambitions. He talks to Nanako into joining his detective agency by promising to help her regain her memory. Nanako innocently believes him, but Marlow's real intent is to use her powers to benefit his agency and himself. The story unfolds as Nanako encounters a variety of dangerous missions and mysterious events, but her natural sunny disposition helps her through all the incidents as she solves each mystery one after the other. (Source: Wikipedia)