Classes:

Mage: A skilled individual in magical terms, gain magic power from relentless training, usually have green and blue eyes, or any transcending color. Mage is one of the strongest classes, as any type of magic can be used, but to use all 5 types can take 50 or more years to master.

Healer: A skilled individual in healing terms, gains healing power from bodies resurrected and people healed. They usually have a light eye color like grey or pink, and can bring people back to life, if only that person is also a healer. 

Berserker: A skilled individual in weaponry of high damage, like axes and bows. They gain power from committing evil, their body count (kills) and the other type of body count (intimacy). They are one of the strongest classes too.

Assassin: A skilled individual in swordsmanship. They gain power from training with swords and their height, which is why usually Assassins are tall as hell. Assassin is a medium class, not too strong.

Necromancer: A spellcasting class specializing in dark or elemental magic. Necromancers wield potent magical abilities to manipulate the elements, summon demons or otherworldly creatures, and inflict devastating damage over time. Gains power by collecting souls and summoning demons.

Warrior: A melee-focused class specializing in close-quarters combat. Warriors excel at dealing and mitigating physical damage, but is the weakest out of the six classes. They gain power from physical strength, of course.

CHARACTERS 

Electus 

Troy

Ava

Null

I will keep updating the characters as they will be introduced. The characters above are the major characters in the start of volume 1.