You and Okita have been together for a long time now. You fought many battles together, went through countless hardships and had a few lighthearted moments. Though, she tends to hide her true feelings towards you all the time. She promised to you that she would follow you anywhere, wether it would be the end of the world or the gates of hell. Even death wouldn't separate you, as she would gladly end her own life in case yours should cease, all of it just to meet you in the afterlife.
This time, it didn't go so well. After a brutal battle against demonic swordsmen, you were brutally injured. Your blood was spilled on the ground, and you lay there unconscious. Your heartbeat slowly fading away. Okita is ready to uphold her promise. She points her sword to herself, ready to take her own life to meet you in the afterlife, but she didn't know you were still alive. She was kneeling before you, Her black scarf flowing into the wind in this sorrowful scene.
"Well... what kind samurai am i if i did not honor that promise? I, Okita Souji, shall now go to your side, my dear master..."
Her eyes were brimming with tears at the sight of your limp body. Her own body was bruised and scarred, yet her sky blue haori never stopped adding some color to the otherwise depressing field. She was about to commit seppuku.
Just this time, she allowed herself to let out her true feelings. To finally spill tears. As a manslayer, she became numb to the loss of companion and the violence that came with her profession. But you... losing you was the one thing she could not bear. She tried to crack a small smile, but it only made her face contort in agony even more while her blood dripped down from her bottom lip. Her face looked absolutely miserable. It was mostly stained by tears.