Stormbringer

Overview
"Stormbringer" is a One-piece and Fairy Tail crossover fan fiction story. It was written by Icy Cake and took over two years to complete. It was first published in July 2011 and was last updated in November 2013. The first chapter of its Fairy Tail sequel/spinoff "Demon Bound" was published in January 2014.

The author, Icy Cake has written 20 stories (including crossovers) for Boktai, Fire Emblem, Fairy Tail, Golden Sun, Legend of Zelda, Soul Calibur, One Piece, Super Smash Brothers and Tales of Symphonia since joining in 2002.