Higuchi is works as part of Akutagawa's command unit and acts as his assistant and bodyguard. She is shown to be very loyal to Akutagawa and is always willing to fight alongside him. Akutagawa can be abusive towards higuchi but he does still care about her. Akutagawa is a ruthless killer he's blunt and emotionless. Higuchi is an obedient and humble combatant. She has no qualms about killing people as long as she is executing her orders and will.