The supporting character's harem is very normal - Chapter 461 Karol Magic Academy.

He is an undead who is devoid of all humanity, he is the one and only supreme overlord, he is a man who has severe mysophobia.

Jiang Pengji got something called the Court Intrigue Stream System.
System: “Your goal is to become the most prestigious woman in the kingdom (the Queen)!”
Jiang Pengji: “Okay, System. No problem!”
Years later, she met the target by becoming the most prestigious woman (the Empress).
Jiang Pengji: “Well done, no?”

- Description from Novelupdates

Xiang Yi was most famous vase in the entertainment industry.

Dive into a novel about the rise of a legendary sportsman.
Follow Zachary Bemba on his journey to become the G.O.A.T (Greatest Of All Time) in the soccer world.

He travels back to a time in his past where opportunity abounds. Access to a system capable of propelling him to greater heights is just the icing on the cake.

From a nobody born in one of the poorest and most remote places on the planet, he relentlessly pursues his goal of becoming the greatest sportsman the world has ever seen.

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G.O.A.T SYSTEM INITIALIZING
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ACTIVATION SUCCESSFUL
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