Too Weak to Resist

No Rahul, please don't do this to me!

Don't you remember that I was a guy and your close friend just few hours back?

It all happened because of my younger sister.  She was playing with a spell book and mistakenly read a gender transformation spell out of it and that spell transformed me this beautiful girl.

So please don't touch me, Rahul.  My new body is too weak to resist you.