Nozomi Kuroda is in the 2nd grade of high school. One day, she finds a letter in a classroom desk. The letter has only the word "like" written on it. The person who wrote the letter is Jun Setoyama. He happens to be the most popular boy at the high school. Nozomi Kuroda feels embarrassed, but she eventually leaves a reply in a shoe closet at school. This is how their secret exchange diary begins. Nozomi Kuroda soon learns that the intended recipient for the first letter was her best friend. Nevertheless, Nozomi Kuroda is attracted to Jun Setoyama, who expresses his thoughts and feelings unlike her. She's unable to tell him the truth that the person exchanging messages is her and not her best friend.
This work is an ensemble drama in which three cleaners who specialize in erasing the dirt of the past, and a reporter who exposes the mistakes of the past. In Kinshicho, Sumida Ward, Tokyo, at the house cleaning shop “Seiriseiton,” three childhood friends work together: Kaku Kento portrays the president Kinomoto, Emoto Tokio as the wheelchair bound Yu-chan, and their junior colleague. They clean places with complicated backgrounds, such as the company ruined by a young enterpeuner who was seen as “The Emperor’s New Clothes;” the home of a couple who lost their daughter to bullying ten years ago, and the Filipino pub where a childhood friend worked. Meanwhile, an investigative reporter was posting QR codes around town that, when scanned, would reveal the truth about unsolved cases and scandals.
