Oh boy. Alright, sit down son.
An OCT, or an Original Character Tournament, is a tournament between comic artists (mostly) where they design an an original character, create a story, and have them thrown into this common place where each artist's character has to fight their opponent artist's character. The judges, and host of an OCT also have characters of their own within the story, that usually act as the hosts within an actual fighting tournament in the story itself.
So you see, the story of an OCT is a reflection of the status and progression of the actual tournament.
Zeurel's been in many OCTs through the years. Some he's won, some he's lost (some very early), and more recently, some he's been a judge in.