Arisa Sonohara

On another planet, Ultraman X and Ultraman Geed are defeated by a pair of dark Ultramen - their doubles! Ultraman Zero tries to protect the young Ultrawoman Grigio from the ambush of Ultra Dark Killer! To fight the Dark Killers, Ultraman Taro summons the newest Ultramen to join together as one - the New Generation Heroes! (Ununnilium)

A year after the appearance of monsters, it seems the siblings are moving their separate ways, older brother Katsumi must fight again as Ultraman to save his friend from a force of evil.

Sana Haitani (Kasumi Yamaya) is a member of an idol group. She’s following the dreams of her now-deceased older sister who always wanted to become a top idol. Unfortunately, Sana’s idol group is disbanded. She is then kidnapped and taken to an uninhabited island. What awaits her is a card battle. If she wins the card battle against other kidnapped idol girls, she can become a top idol. But, if Sana loses … she will die.