Loneliness deepens the twisted bond between sisters, while jealousy stirs desire and sexual impulse. Hikari Aotsuki and Nagami Yura, a wealthy sister pair, and Kasaki Ayaka and Chigasaki Arisu, a poor sister pair—when the two families marry and begin living under one roof, forbidden lesbian relationships begin to unfold. This shocking work portrays how sisterly bonds become distorted and intensify. Immerse yourself in the whirlwind of emotions and forbidden romance.