Chiharu has been living in a 1LDK apartment with her daughter Nozomi since she lost her beloved husband a few years ago due to illness. Chiharu never forgot her gratitude to her daughter, saying that it was thanks to Nozomi who always smiled that she filled the hole in her heart that lost her husband. One day, I find out that Nozomi is dating a ronin, Norihiro, who lives next door. Chiharu can't hide her joy when her daughter is in such a year. However, after this, an event occurred that changed the relationship between mother and daughter ...