Satsuki Kirioka's pufferfish restaurant was a well-known establishment famous for its fugu cuisine, with owner Kenji Kirioka attracting countless customers with his exceptional skills. However, one day, Kenji suddenly died from pufferfish poisoning. His wife, Satsuki, was devastated by the tragedy and fell into a deep depression, unable to recover. Around the same time, due to rumors and reputational damage, customers stopped coming, pushing the restaurant toward closure. At that moment, Masaharu, Kenji's apprentice, appeared before Satsuki. He passionately declared, "I will definitely rebuild this restaurant!" and moved Satsuki with his determination. As a result, Satsuki handed over the renovation funds to Masaharu—an act that became a major turning point in the story. Soon after, the "poison" of Masaharu and the other apprentices slowly began to seep into Satsuki's body—.