Hikaru Hoshino is the male protagonist of the anime Time Patrol Tai Otasukeman. He is a young member of the Time Patrol, an organization based in a massive space station far from Earth, dedicated to protecting the annals of history. When a trio of corrupt fellow patrollers named Atasha, Sekobitchi, and Duwarusuki join forces with the mysterious villain Tonman Manteau to alter the course of history for their own ambitions, Hikaru is one of the two agents who stand against them.

Alongside his partner Nana Mikazuki, Hikaru takes on the secret identity of a superhero known as Otasukeman, or Rescueman. He is specifically referred to as Otasukeman No. 1. Together, they travel to various points in time to thwart the villains, known as the Endangermen, who tamper with recorded events under Tonman Manteau's instructions.

Visually, Hikaru is depicted as a teenager with orange hair that falls to his shoulders and blue eyes. He is sometimes shown wearing a mask as part of his hero attire. His primary relationship within the story is with his partner Nana, as the two work as a team to foil evil plans and protect history from manipulation. The villains he opposes are motivated by personal desires to become famous and revered, but specific details about Hikaru's own personality, direct family background, character development over the series' fifty-three episodes, or his individual abilities beyond his transformed hero role are not available in the provided information.