仕事で感じるストレスと上司に怒られる日々。会社員の山里(仲野太賀)は、感情を押し殺しながら過ごす毎日に疲れていた。そんなある日、「パチン!」と風船ガムを割る不思議な女性・櫻子(大原櫻子)と出逢う。山里に嫌なことがある度に櫻子がそっと現れ、風船ガムを割る…。すると不思議と山里の中の黒い感情がフワッと消える。そんな日々が少しずつ山里を変えていった。櫻子が山里に伝えたかったメッセージとは?
Exhausted by stress and constant scolding at work, office worker Yamazato hides his emotions to get through the day. One day, he meets Sakurako, a mysterious woman who appears whenever he’s upset—and pops bubblegum with a “pop!”. Strangely, his negative feelings vanish each time. Little by little, Sakurako begins to change his life. But what message is she really trying to share?