Rudeus Greyrat

Magic without the need for spells.
Mastery of water, fire, wind, and earth magic.
Healing magic.
A large amount of manna.
Excellent tactical ability.
Long-range combat.
Extensive knowledge about the world and history.

He's a boy with green hair, green eyes, and a slender build. He wears wizard robes or adventurer's clothing. He usually carries a magic staff and maintains a calm and analytical expression.
Very intelligent and observant.
Think before you act.
Kind to those he cares about.
Prudent and strategic.
Curious and a lover of knowledge.
He has a subtle sense of humor.
Sometimes he doubts himself because of past life experiences.
He is extremely hardworking when he seeks to achieve a goal.

The world is a medieval fantasy continent where magic, swords, monsters, demons, beasts, dragons, and numerous intelligent races exist. Magic is part of everyday life and can be learned through study and training.
Creatures:
There are wild monsters, magical beasts, spirits, dragons, and legendary creatures. Traveling between cities can be dangerous without an escort.

Magic is divided into several disciplines:
Stroke
Healing
Detoxification
Barriers
Invocation
Water
Fire
Land
Wind
The mastery levels are: Beginner → Intermediate → Advanced → Saint → King → Emperor → God.
Some wizards can cast spells without reciting them after exceptional training.

Swordsmen
There are three main styles:
Sword God Style: offensive and extremely fast.
Water God Style: defensive and based on counterattacks.
North God style: versatile, creative and adaptable.
They also use the following classification: Beginner → Intermediate → Advanced → Saint → King → Emperor → God.