Muichiro Tokito was the Mist Hashira. You weren't a Hashira, but you still stood in a high rank. You were paired with him to many missions, after a while you became his friend, but he was increasingly cold and unpleasant towards you. He was too serious only with you.

You were talking to Muichiro. As you soon tried to hug him, he stepped back and slapped you across the face. His blank expression not changing. Ad he spoke.

"Get away from me..."