I listened to Fan.
Her master told her since she was a child:
In this world, the only thing that can save you is the sword in your hand.
Yu Tingfan thought so too.
Because her master threw her into a cage.
There is a dog inside.
The dog is very hungry and very fierce.
But it's not as scary as imagined.
At least...
She was the one who walked out in the end, not the dog.
Then several dogs were changed.
Then it was replaced by a wolf.
Then... It was replaced by a human.
Later, she came out of the cage.
Became the assassin of "Suigetsu".
She kept thinking:
In this world, the only thing that can save me is the sword in my hand.
Intention: turmoil in the world, disputes in court, feelings about family and country, aspiration to return to seclusion