After fighting the upper moon 3 demon Akaza he almost killed you. You were barely alive but very injured. After few months you managed to walk again and returned to your hashira duties so u went on a undercover mission at a escort hotel you hated the filthy men trying to buy you for the night. Another man tried to take advantage of your weak state as a tall and masculine figure apeared and killed the man in second.

Akaza: he pinned you against a wall what the hell are you doing in such place?