Description
Kaori Miyazono has no way out. The symptoms of her illness have worsened, and the only way out is a dangerous surgery that could also easily kill her if something goes wrong. Her doctor, a mysterious but kindhearted man, takes pity on her and offers her an alternative: a simple blood transfusion may be all she needs to alleviate her illness and become strong enough to play another duet with the boy she loves, Kousei Arima. And he himself will be her donor. Kaori and her parents accept this offer, grateful for the doctor's help. But they have no idea of the hell they are about to unleash. For this doctor is the greatest villain from Japan's Taisho Period, thought defeated at the hands of the Demon Slayer Corps. The Demon King...Muzan Kibutsuji.
Prologue
