Kasumi

Wherever Maki goes, a teenage girl always follows.

Indifferent and silent, she cares little about anything but Maki's safety. She doesn't make friends and ignores those who try to approach her. Gradually, people get used to it and see her as a shadow of Maki.

The girl calls herself Kasumi. It is little known that, surprisingly, Kasumi is an assassin rather than a bodyguard.

She used to be a roaming killer whose hands were full of blood. And Maki is actually her final target.

The Demon Blade, that's what they call Kasumi.

She received the title from her quick and ruthless actions.

And both her infamous weapon and the devilish, satisfactory look on her face after murdering her target spread her name even further.

And now, such a murdering weapon has been chosen to assassinate the legitimate heir of Tobunkai, Maki.

Kasumi never tries to learn about her targets. She enjoys fighting unknown, powerful enemies because that way it gives her the most satisfaction.

"As I thought... you are one of Muramasa." Hearing Maki's voice, Kasumi's heart is clutched. When was the last time someone mentioned that name without disdain?

"My sword, just like yours, was made by a master blacksmith. But why did you try to kill me?"

Kasumi is ashamed of herself. It was a choice she made after the death of her father, the proof of her submission to the curse. Yet the girl before her opened a crack on her sealed destiny. And Maki's sword showed no signs of erosion.

The Muramasa Clan were swordsmiths from Ise of Japan. Thanks to their talents and instincts, they acquired a technique to inlay swords with lenses. And their work was unparalleled in the entire country.

However, later the owners of Muramasa swords surprisingly noticed that those blades had developed their own consciousnesses and would erode the wielders. As the name of the "cursed blades" spread, even the swordsmiths themselves couldn't escape from it. And the Muramasa Clan never manage to clear its relationship with the curse.

Because of what happened to their owners, Muramasa swords were soon seen as evil objects.

The Muramasa Clan suffered as a result. Most of its members either died or betrayed the clan. And the technique Muramasa smiths used became a little known secret.

But what the curse really is? Is it the evil generated while forging the blades? Or perhaps it's the corruption caused by the slaughter made with those weapons?

After the death of Kasumi's father, she became the next one who carries the curse on her shoulders.