Hikaru Indou is one of the main characters in the anime and manga series 'Hikaru ga Shinda Natsu.' He is a mysterious and enigmatic boy whose sudden reappearance after a long absence stirs confusion and unease in his friend Yoshiki. Hikaru's behavior is odd and unsettling, leading Yoshiki to suspect that Hikaru might not be the same person he once knew. Hikaru plays a central role in the psychological and supernatural elements that drive the story's suspenseful and emotional narrative.