Not a harem, not a routine, not invincible, not systematic, not brainless, not a good article, please be careful if you mind.
The protagonist starts from how a poor boy was selected by the times to reach the top, and how he was backlashed by the times and fell into the abyss, and finally transcended the times. The real king is not to ride the wave, but to understand and reconstruct the land beneath the wave