Ep. 1: A former assassin receives a stolen heart from a deceased partner of the Sweeper.

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Glass Heart, a fifteen-year-old assassin trained by Zheng Dao Hui, attempted suicide after completing her fiftieth mission. Meanwhile, Kaori Makimura, the beloved partner of City Hunter Ryo Saeba, died in a traffic accident. As an organ donor, her heart was removed for transplant but stolen during transport. Glass Heart received this heart, saving her life, yet remained unconscious for a year. Ryo Saeba has since ceased working as City Hunter and led a degenerate life. He believes that Kaori's transplanted heart still lives on in someone else.