(No harem, system, unhappy writing, retro traditional magic, please be careful if you mind)
Swords and guns intersect, technology and magic collide. This is a chaotic continent where there are not only humans, but also various demi-humans, evil spirits, and even demons. Various races formed small kingdoms to conquer each other, and the wars continued.
In this chaotic continent, there is a profession called rangers. Their modified bodies have a lifespan far longer than that of humans. Their long lifespans give them more learning opportunities than ordinary humans, that is, they can use magic and potions, are proficient in various cold weapons, and even drive the undead to offer sacrifices to summon demons to fight for them. They are also equipped with human technological creations, ride in advanced transportation and use muskets to kill enemies.
They hunt demons and evil beasts, hunt down criminals for bounties, and even assassinate powerful people. These are just ways for them to pursue profits.
The most important rule for a ranger is that there are no rules.