Chiharu has been living in a 1LDK apartment with her daughter Nozomi since she lost her beloved husband to illness several years ago. Chiharu never forgot her gratitude to her daughter, saying that it was thanks to Nozomi who always had a smile on her face that filled the hole in her heart after losing her husband. One day, she learns that Nozomi is dating Norihiro, her ronin who lives next door to her. Chiharu can't hide her happiness that her daughter has reached that age. But after this, something happened that changed the relationship between her mother and daughter.
