A mysterious man arrives in a quiet Japanese town. With him, he carries a strange helmet that allows one to re-experience the happiest moment of their life. He goes on to make the village people recall their happy pasts, but his face is lined with worry and a sadness that deepens. What is the secret of this helmet? And what is he trying to do with it?

Happiness

Yamane Mito lives her life as the charismatic influencer "MITOYAMANE", supported by her younger sister Miho. One day, she is approached by her agency about collaborating on an app. The app becomes very popular and Mito's face is spread around the world...