What is "LARP"? It stands for "Live-Action Role Play", a game where you'll be playing as your favorite anime and manga characters. Hundreds are available for you to play! The game will run the course of the convention, featuring an overarching plot and scheduled events, so you can attend as much or as little as you like. LARP is not a cosplay event, meaning you do not need to be in costume to attend. You don't even need to be dressed as the character you'd be playing. But if you want to, you're more than welcome to!
More details and signups for the Zenkaikon 2014 LARP will be posted closer to the convention.