Chocolat Aikawa, a master chocolatier, and her elusive partner Cacao Theobroma operate the boutique Chocolat Noir. Renowned for its hand‑crafted confections that are said to fulfill wishes, the shop attracts a host of troubled souls. Each transaction is shrouded in secrecy, and the shop's reputation grows as more desperate hearts seek its legendary delights. Yet each wish‑granting chocolate comes at a steep price: patrons must surrender their most treasured possession. While Chocolat appears untroubled, her gift of wishes masks a hidden sorrow—she is a young woman still haunted by an unresolved debt from her past.