In the seventh year of the Meiji era, down a quiet alley in Tokyo's Shitaya district, stood a tiny clinic called the Qiu Xin Clinic. Its owner was a young woman in her early twenties named Qiu Ying. She treated the poor and dispensed medicine, a gentle, taciturn woman who wanted no part of worldly affairs. Few knew that she had once been the fearsome swordswoman "Demon Princess" of the anti-shogunate wars: Qiu Yingying, the only daughter of the Qiu family. At Toba-Fushimi, Aizu, and Hakodate, 137 souls had fallen to her blade. When the war ended, she put down her sword, concealed her identity, and vowed never to kill again.
But the aftermath of the turmoil had yet to settle. An old enemy appeared in Tokyo. A humiliated girl asked her to teach her a sword style for killing. Government spies began looking into her past, and wandering martial artists came seeking revenge... She wanted to live in peace, but the blood-soaked era refused to let her go. This is a story about letting go and protecting what matters. A woman who killed 137 people tries to redeem herself through medicine amid the upheaval of the Meiji Restoration, to resist the times with kindness, and to protect those worth protecting with a sword that kills no one.
