The clerk of "Kirigakure Convenience Store" and the store manager wearing a translucent mask have set many strange rules, and anomalies occur frequently in the store: missing products, mysterious notes, pocket watches stopped at 3:14, and special milk every Wednesday.
As we go deeper, we discover that the convenience store has hidden secrets from three years ago, which involves the "Mist Core" and the "Mist Man" who covet it. With the guidance of notes and the help of reporters, the truth was gradually pieced together, and finally everyone was united to rescue the person involved and capture the "Mist Hidden Man". The convenience store has returned to normal, but new anonymous letters still appear, leaving an unfinished aftertaste.
Concept: When urban loneliness is transformed by "fog" into a convenience store swallowing up time, only by remembering the missing can one redeem himself from the cycle of anonymity.