沖田さんの刃が先生の首筋に触れる寸前、二人の間にどんな空気が流れたんだろうと考えていたらなんか生まれた絵
年齢制限つけるまではいかないものの（超絶個人的主観）若干の流血描写があるので苦手な方はお気をつけ下さい

I was wondering what the atmosphere was like between the two just before Okita-san's blade touched sensei's neck, and then this picture was born
Although there is no age restriction, there is depiction of blood (from my interpretation), so please be careful if you don't like it