"Only you, Onee-sama, are being unfair! Give it to me!" Always saying this, Adele's little sister, Lillian, takes everything from her, and because of their parents who fulfill all of Lillian's wishes, Adele ends up with nothing to wear or use! Living in this house any longer is impossible! Just as Adele is about to run away, she meets the beautiful young lady, Dianne. Becoming Dianne's mysterious "best friend" changes Adele's circumstances. However, there's no way her sister and parents will change their ways... This is a practice piece attempting to write a common trope of "sisterly disparity due to a little sister who takes everything." The setting is a convenient and short story. * Also published on "Kakuyomu" and "Alphapolis."