(The protagonist is somewhat brutal, cunning, and far from saintly, so readers who may not enjoy that should proceed with caution. The first 20 chapters lay the groundwork for the plot, so feel free to skim them. The exciting parts come later.)
Long Yuan transmigrates from the modern world into a Western fantasy setting and wakes up as a slave boy. To save “little angel” Tina, he matches wits with slave traders. Later, Anna appoints him as her Guardian Knight, and he embarks on a royal path that will shake the Beast Continent. He clears the obstacles in Anna’s way and restores truth and order, unaware that an even greater danger is drawing near...
It's still ok
As a newbie, it's well written.