千古不传之术返老还童术

伫立于近未来大都市一角的忍者宅邸。 住在那里的忍者一族石动家的长女·律花，憧憬着身为研究人员的父亲。 她觉得平凡而幸福的生活会一直持续下去，但就在某一天，宅邸突然遭到某人的袭击。面对走投无路的危机，律花果敢地挺身而出，但——。 成为劈开黑暗的“黑”吧！。The series is a mysterious crime series with a horror twist and is based on the international bestseller by Bavo Dhooge. Styx is a corrupt policeman whose body washes up on the beach. He opens his eyes, but he can't feel a pulse anymore.。