Noah, the young lady of the Sakuragawa family, is an innocent girl who one day suddenly lost her memory. Because of this, she remembers nothing from before her school days. By her side is Shiori, a maid who acts as her caretaker. The two girls of the same age quickly become close, trusting each other to the point of physical intimacy, and eventually, Noah becomes utterly devoted to Shiori. However, there is an unerasable past for these two... Before losing her memory, Noah had sexually assaulted Shiori...
