The dispassionate, transforming assassin Golden Darkness returns to peer deeper into the mysteries surrounding her new life, while a sinister Nemesis manipulates her younger sister Mea from the shadows. Along with their newly discovered mother, Tearju, this previously estranged family quickly becomes the center of everyones attention. On the other hand, Princess Momos Harem Plan stands on shaky ground amidst Ritos inability to confess to his longtime crush Haruna, who has grown feelings of her own.