When a mysterious melody stirs the heart of a young girl in Akiba, she finds herself at the center of a dangerous quest, where her own past and the fate of the city intertwine....

In a hidden corner of Akiba, a forbidden library holds the key to a mysterious past, and two souls are bound by fate to uncover its secrets, risking everything for love and truth....

In a world where Akiba's streets are a battleground of ambition and desire, a maid named Kiyomi must choose between loyalty and betrayal as she navigates the treacherous underbelly of the city's most powerful families....