GUESS WHO (round 25)

[tsunderes]

I happened to find a little scrap of paper in my desk with something scribbled on it. It seemed to be a clue to the author's identity, but I couldn't figure out who it was, even though they sounded really familiar! If you can figure who the character is, I'll give you 3 random cards, but only by 10/15. I mean, after a week, that's just too much effort. But here's what was written on that piece of paper:

"A powerful, but secret ninja art is written into my body. Quite literally."

Last round's mystery person was Eugénie Danglars from Gankutsuou.