(Crossover) Am I the Creator God?!

In her previous life, Black Cat was an assassin. Her life ended when she failed a mission... or so she thought. She survived, and King Yama sent her to carry out a mission in another fictional world. That's when she started hiding her true self behind a mask.

Great, my first stop is Hunter x Hunter. I'm the Phantom Troupe's No. 12 Spider, and all the members adore me. No problem! I'm very satisfied. But... who the hell sent this stupid Mary Sue here?! She wasn't strong enough and got killed. Good! Anyway, I'd already made a deal with the big shots in the troupe: once I'm strong enough to come back, you Mary Sue are going to die!

The second stop is Hayate the Combat Butler. I'm a rich young lady and a princess. I'm very satisfied! I look the same, and my Spider tattoo is still there. I'm happy with that. Going to school at Hakou Academy is fine. Himuro treating me like a kitten? I don't mind. I told them who I really am, and they all accepted it. I just have to ignore those two, Nonohara and Himuro. But... why did I wake up and find myself wearing a skirt?!

The third stop is Katekyo Hitman Reborn, and that's fine too! I'm Tsuna's younger sister, a Spirit Guardian, and the leader of the Moon Class at St. Mary's Academy. Great! What a powerful identity. But why do I turn into a cat if I don't have enough power or don't mix in?! Right now, my constitution includes both vampire and cat traits. At least Hibari takes good care of me when I turn into a cat. But... why do I wake up halfway through the night wearing a skirt?!

I've been through one fictional world after another. Who am I really? My heart is still incomplete, and I have a whole pile of romantic debts to settle... I've had enough! Why not just take them all?!

Haha, it's way too Mary Sue, so I don't want to keep writing it... This is kind of embarrassing (covers face)