Always saying, "Big sis is so unfair! Give it to me!" Adelle's sister, Lilian, constantly takes everything from her, and her parents always give in to Lilian's desires. With nothing left, Adelle decides to run away from home. She meets the beautiful lady Diannu and becomes her "best friend," changing Adelle's circumstances. However, her sister and parents show no signs of changing... This is a short story with a convenient plot, written as an attempt at a common "getting even with my sister" theme. Also published on Kakuyomu and Alphapolis.