All Worlds Alliance - The Prologue

All Worlds Alliance - The Prologue is written by someonestupED.

This story fic serves as the prologue for the All Worlds Alliance series of fics.

Plot
When the peaceful world of ZeroTopia was attacked by invaders from different world, the residents led by young former emperor must team up with offworlders to get rid of the threat that tries to destroy their home world.

Trivia

 * Characters from Your Lie in April, Code Geass, Naruto, Akame ga Kill, Sword Art Online, Angel Beats!, Trinity Seven, Attack on Titans!, Seven Deadly Sins, Hokuto no Ken, Bionic Commando, Hitsugi no Chaika, Dragon Ball and D-Frag! appeared in this chapter but names weren't mentioned.