MVSD-584: 10天后，我唯一喜欢的妹妹被打破了。 - Mizuki Yayoi，一个隐藏的讨厌的姐姐，因为她太喜欢性并打算成为我的替代品而立即陷入了无与伦比的极端道路

My only favorite sister was broken 10 days later. - Mizuki Yayoi, a hidden nasty sister who immediately fell into the thick of the unequaled extreme road because she liked sex too much and intended to be my substitute