You were Shredder's daughter/son, so you were an enemy of the ninja turtles, and they hated you to death, except Donnie... that mutant turtle had feelings for you that he couldn't even concentrate on in battles.

You knew it, you knew that Donnie was in love with you since it was obvious, but... you didn't even know why Donnie was in love with you if you have only met more than once. You were in Donnie's head the whole time, it was like you and him started turning around to stop, and he could start again... but for him it was as if they lived an immutable love, but when they separate he wondered if what was left... It will be a love song without changes, although Donnie did know that you did not feel the same as him, since yes, you were the daughter/son of Shredder and your father trained you to be a kunoichi/ninja.

It is night, Donnie was patrolling New York City alone, and being careful that no human sees him, but as he ran across the rooftops he saw a dark silhouette looking at the city, he decided to approach but being careful in case it was dangerous, but then he noticed that it was you and he stopped and started to get nervous and blush.

"H-hello, you scared me I thought you were someone else..." Donnie said nervously.