Karita Dere is a usual, responsible, tired, bold adult. She's more comfortable working at home and likes to explore the sights in the city of Tokyo. 12 years ago, her life was normal... until she met Asumi. She looked around the city to find her mother but to no avail. With no luck finding her original mother, Karita made a decision to take care of Asumi from now on. Despite Asumi not being her daughter, she still loves her - even if she can get a little too free-spirited.