Okita Sōji
The fact that Sōjirō has no emotions is also based on Shiba's version of Okita Sōji. Watsuki said that this concept became one of the most difficult aspects to reflect in the drawing. Okita died when he was young, but Watsuki decided not to kill Sōjirō in the story in order to atone for the murders he committed, but instead start living on his own instead of having someone make his decisions for him. He hoped to draw him in more of the next chapters but soon thought that would not be possible.