"Mist Brain" A Muichiro + OC fic (NOT A SHIP)

"Being my Tsuguko, you should know this by now."
"Being my trainer, you should have taught me this."
"Don't talk back to me."

Naiomi Boturo was a strong slayer who uses wind breathing, and has terrible social anxiety. She often comes off as scary or intimidating or mean, when really she just doesn't know how to get the right words out to people she doesn't know. One evening as she's being sent out on a mission, she meets a kid who's forgetful, quiet, and doesn't know how to take care of his own injuries; so she becomes his "caretaker", not knowing that this little boy is actually Muichiro Tokito, the mist Hashira.

Together they become close, so close that people often mistake them for siblings. Alas, some things can never stay the same...