Tachibana Jugo

Tachibana Jugo is the 17 year old assistant of Vice Captain Yamanami Keisuke introduced in Volume 4. A "beauty" who attracts the attention of the other men in the troop, Sei immediately assumes that a lost book of haiku belongs to him.

Unfortunately, when Sei manages to get Tachibana alone, he assumes that Sei wants them to be lovers. As Tachibana leans in to kiss her, a knife flies through the air and strikes him in the head with the handle. As usual when Sei finds herself in trouble, Okita Souji comes to the rescue and reveals that Tachibana was a spy, trying to kill Sei.

Tachibana nearly manages to escape before being cut down by Yamanami Keisuke.