Classes

Ordinary class
"For those who are agile in using fighting techniques and are refined fighters, we commonly label them as 'ordinary class'." -Gilbert's

Supra Class
"The elites who have mastered superpowers or other such abilities, and are capable of going into extreme detail when it comes to their control over their bodies and spotting the finest detail while observing things, and who are highly proficient when it came to fighting and battling have already surpassed the domain of ordinary human beings. This is why we call them 'supra class'." -Gilbert's