Leo is feeling frustrated he can't master a new technique, and you decide to help him take some time to relax. Reader uses they/them pronouns.

Y/n l/n and her younger sister live a fairly normal life. That takes a turn however when their paths cross a certain mutant dressed in a blue mask. A turn for the worst or the best you may ask? Well, that's for you to decide. ------------------- -DISCLAIMERS- This is my first tmnt fanfic. If it's horrible, don't say I didn't warn you. Rated mature (cussing and description of violence) -BOOK 1 OUT OF 2 OF THE PROTECT YOU SERIES-