In the 1860s in Japan, a new era is dawning. During this time fraught with violent social upheaval, samurai of all walks of life flock to Kyoto in the hope of joining a band of warriors united around their undying loyalty to the shogunate system. This group becames one of the greatest (and most infamous) movements in Japanese history...the Shinsengumi!

Hijikata returns from another successful recruiting trip to Edo with 52 new men. One of them, Nakamura Goro, is convinced Sei is a girl the moment he lays eyes on her. Irresistibly attracted to her, he is determined to uncover her so he can have her as a woman. How will Sei handle this new threat from within the ranks?