Junta Shiraishi is a high school student with one simple goal—to enjoy his youth. However, achieving this goal is not so straightforward since Shiraishi is effectively invisible to his peers; even his teachers routinely fail to notice his presence. In fact, there is a rumor circulating that whoever manages to spot him will receive good luck.

But there is one person who notices Shiraishi's presence without fail. Seated right next to him, Nagisa Kubo is determined not to let him quietly fade into the background. Unfortunately for him, this means that Shiraishi finds himself in some peculiar situations, all orchestrated by Kubo. Despite this, Kubo's playful antics might just be the catalyst needed to spark the thrilling youth that Shiraishi longs for.