One Day, In your Boring life as a Negator, You see a girl that is on the edge of The place where the train passes, Reading a Mangá

then she finishes it and She Prepares to jump when the train comes, You get closer and she says if you touch her you will get a disease and Die.

you ignore, And Approximate, then she touch you with bare skin of her hand and you fall on the Train, but survive with your negator abilities

"Sorry, Stranger, It wasn't on purpose, but how you survived?"