Fuyu Monogatari

. Abandoned as a child Aika was taken in by Cobra's family but basically raised by Kohaku of Mugen since he was the one who found her. She has a passion for martial arts and even though she could have graduated top of her class she didn't want to give up training. When Mugen disbanded she ran away disguising herself as a male with the hope to pursue her dream of fighting professionally. After the circumstance change, she finds herself back in the district of Sword after Cobra rejects her wish to join Sannoh Rengokai she finds herself training following the first person who accepted her for who she really is Murayama Yoshiki leader of Oya High.

This story takes place in the last few episodes of season 2 and during the first movie.

The book is called Fuyu Monogatari which translates to a winter tale it's an amazing song by jsb3

Disclaimer: I do not own any of the high and low characters this is a fanfiction made for entertainment purposes only