SailorMoon said
A famous demon slayer like Akane...? :p
She hunts down demons when they are usually alone. In her mind she would rather fight a very powerful Demon in single combat instead of an army lesser enemies. Remember a fight a huge number would tire her out. She does have an incurable heart condition that makes a drawn out fight very dangerous for her. So usually if she has to it would end up in Akane trying to separate the enemy into smaller groups and hope she doesn't pass out.
Raineh Daze said
It's something of a speciality of Yuki's. XD
Well not everyone is able to wield giant swords that smash through almost anything the enemy can bring to bear. Also everyone isn't superstrong and skilled enough to kill an army one handed lol.