Mashin Sentai Kiramager: Episode ZERO (2020)

The Crystalia Kingdom is a land of beautiful jewels ruled by King Oradin. However, with the guidance of Oradin's younger brother, the Demonic General of Betrayal Galza, the Dark Corps Yodon, led by the Mask of Darkness Carantula, invaded the country, crushing the king and destroying the country. The surviving Princess Mabushina of Crystalia, along with Crystalia's secret treasures, the KiramaStones, relied on Oradin's friend, Muryou Hakataminami, and headed to Earth where the next Yodon Army would invade. Hakataminami, a supervisor of CARAT, developed the Kiramagers' transformation item, the Kiramai Changers, in preparation for Yodon's invasion of the Earth. Mabushina decides to look for warriors who have strong KiraMental, the source of a shining spirit that is getting very rare but the KiramaStones enable to find these said warriors.