(Please read The Secret Sonata || Ryeji before reading this) The Sonata Calls || Lucianne & Winrina Spin-off (The Secret Sonata Book 2) Years after the reeling calamity in the City of Andong, the divine world has yet another surprise in store for Lucy and Winter, putting utmost burden on their shoulders...In the form of none other than the Black Mamba. Winter, after discovering that her existence means much more than she's always perceived to be, will she be able to bear with the knowledge? Lucy, now the powerful queen of demons, will she be able to carry out the task she's been assigned to even when the stakes are high? By accompanying them on a journey to Kwangya, let's find out what roles each of them has to play in relation to the Black Mamba!