Rocket Starter

A young girl named Takeru lives on an island where she encounters two brothers, Tesla and Marin, who can fly. The brothers are viewed with fear and suspicion by locals, referred to by names such as "The White Witch," or demons, though they are also called "Utility" in a more scientific context. Tesla seeks to understand their abilities with the help of a local researcher, who is Takeru’s mother. As Takeru grows closer to Marin, the investigation into the brothers’ powers leads to a story involving romance and conflict, disrupting the island’s peace.