Pokemon Black and White. Set in an alternate timeline where N won, a young girl by the nickname of Herupa watches as the world she once lived in is torn apart and isn't going to stand for it!

Okay, okay, TRIGGER WARNING: This book is about a Yandere so if you don't like that, don't read! ~~~~~~~~~~~ Is it bad that Serena loves Ash so much that she wants to eliminate any girl that gets in her way? Once Misty comes back, Serena instantly hates her and Ash's felling for her. So she'll stop at nothing to get Ash back from Misty. But she soon realizes that other girls might take Ash away from her too... So it looks like she'll have to 'eliminate' them all, if she doesn't get caught...