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.
A busy publicist learns to open her mind and heart when she moves into a luxury apartment with a friend and her three free-spirited roommates.
Set on Hashima Island in Nagasaki Prefecture during the coal industry's rise in 1955, this story follows themes of family, friendship, and love. It contrasts the post-war era, where people had little but were full of dreams, with present-day Tokyo, where abundance prevails, but young people struggle to find their dreams.
