Yoshida, the diligent class representative, couldn't help but feel a growing sense of concern for her classmate, Yano; day after day, he would arrive at school covered in injuries, leaving her puzzled and worried about the cause. Determined to get to the bottom of the mystery, Yoshida and her friends decided to investigate Yano's situation more closely, discovering that Yano is an extremely unlucky boy! What's more, he's unable to lead a normal high school life due to his 'unlucky constitution.' Moved by Yano's plight, Yoshida resolved to provide him with unwavering support. As she spent more time with Yano, she found herself increasingly drawn to his pure and straightforward nature, but the distance between them just didn't seem too close. Meanwhile, Yoshida is confessed to by the most popular boy in school... This unexpected turn of events only further complicates the already delicate situation as Yano, touched by Yoshida's kindness, begins to develop feelings for her.