It is the Meiji era. Satoko, who is said to have little time left to live, is kidnapped and brought to the ‘island of prostitutes’. Her life is saved by Shinpei the assassin, who develops a bizarre love for her…

While trying to steal Satoko away from Shinpei, Kotaro ends up shielding her from a fall down a cliff, only to find himself at his rival’s mercy as the assassin catches on to his plan… and catches up to them. But upon seeing Satoko’s resolve to stay with Shinpei even if it meant abandoning her childhooddream, Kotaro finally acknowledges her feelings and makes a decision:

‘I will continue to support you until you’ve attained your happiness.’

With renewed determination, Satoko approaches Asagiri to affirm her love for Shinpei. However, Asagiri now has a new task for her—to prove her love for Shinpei with her body…