Kaze Hikaru, Vol. 4, 4

Romance between swordsmen, based on a true-life adventure of a young girl determined to be a part of history.
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!
Ordered by Katamori-sama to assassinate Captain Serizawa, Captain Hijikata holds a secret meeting with the other leaders in the Mibu-Roshi to plan the murder of their charismatic comrade. Soji breaks in on the meeting, but rather than pleading for his friend's life, he offers to kill him.