About Y/n

Y/n is the adopted baby sister of the family.
Problem is, she's very allergic to sunlight and has some powers that nobody knows about.
When she was a baby, she was left at the doorstep and was taken in immediately.
Now 3 yrs old, her and her big brothers are sent to the Mushroom Kingdom, not only to rescue it, but to also save Luigi from the evil Bowser.