Yuu Setoguchi

Yuu Setoguchi serves as the club president of Sakuragaoka High School's Film Research Club and shares a lifelong childhood bond with Natsuki Enomoto. Despite being one of the most popular figures on campus, he remains genuinely unaware of his own charm. Known for his warm and attentive nature, Yuu tends to be cautious when it comes to expressing romantic feelings—he once held back his emotions out of fear of disrupting the precious friendship he had built with Natsuki. Throughout the story, he plays a key supporting role in nurturing Haruki and Mio's relationship, while quietly building a tender and steady romance with Natsuki.