The supporting character's harem is very normal - Chapter 9: Going to the Karol Empire?

System, “You have a sickness. Moreover, you’ll have one in every world.”

Hao Ritian, “…”

System, “What’s wrong? Is there a problem?”

Hao Ritian smiled, “No, there’s no problem. I was just a bit excited.”

System, “…”

That smile intensified the system’s feeling of ominous foreboding. It has had this premonition since it learned the name of its host. Now it only prays that this is all its imagination!

Ps: Protagonist shou 1v1, the gong is always the same person.

- Description from Novelupdates

Yun Wan transmigrated into a vicious female supporting role in a male-frequent novel.
The female partner was born in the Acacia sect, and has an indescribably superb physique. With her as the center, monks within a radius of ten meters can rely on her to obtain cultivation. It is not an exaggeration to move the spring water. If the two parties work together, they can become immortals in place. Not impossible.
Therefore, the father dedicates her as a “gift” to the unlucky man N Suiyuan in the story, and never wants to be returned on the spot by the other party.
When Yun Wan passed through, she happened to be on the way to “give gifts”.
Recalling the miserable ending of the female supporting role, Yun Wan decided to run away and find a sect to learn art from a teacher. To ensure safety, she planned to find another bodyguard.
The bodyguard she had a crush on, Mo Yi Qingchen, was very handsome, and Yun Wan leaned over happily: “Brother, take the order? As long as you stay within ten meters of me, you can get 888 cultivation points per second.” At the end, she added, “It’s done.” Afterwards, our spirits and souls blended together and soared together.”
That’s right, she’s hungry for abs.
In just three sentences, Yun Wan managed to get the handsome guy to escort her for eighty-eight days.
Finally arrived at the Great Sect, Yun Wan was about to bid farewell to the bodyguards, but was greeted with a sentence: “Welcome Master Suiyuan, Master Yun Wan returns to the sect!”
“…???” What year old? Teacher what mother?
The other party looked at her with a half smile but not a smile: “Mind and soul, soaring together?”
“…” Damn it, she is the unlucky little bastard.
*
Note: There are private settings inside, please do not research.
The ranks of immortal cultivation are: Qi refining, foundation building, consecration, Jindan, Yuanying, Mahayana, and robbing.

Content tags: Xianxia Cultivation Wearing Books
Search keywords: Protagonist: Yun Wan, Xie Tingyun ┃ Supporting role: ┃ Others:
One-sentence introduction: The supporting female partner of the Hehuan sect will never admit defeat!
Conception: scientific cultivation of immortality, physical fitness

- Description from novelbuddy

Climb the Tower.The path to power is ever growing, immeasurable. A peak above a peak, above a peak. There is always the next peak to look up to. A place where dragons eat dragons.In this world where a catastrophe known as “Global Awakening” gave humans different magical abilities to fight the dungeon and monsters that invade earth, Jael is among the weakest—one of the Half Awakened, struggling to survive through odd and humiliating jobs.However his dream of climbing the Dungeon Tower won't be forever buried because a WILL has been left behind. An intent put into a spellbook that's been waiting for just who to claim it.In this golden era of worlds, all eyes are on the Dungeon Tower, where everyone seeks to become its master. “What do you desire? Money and wealth? Honor and pride? Authority and power? Revenge? Do you want to reverse your failures? Or something beyond them all? Whatever you desire—it is here. If only you climb.”Follow Jael’s journey as he ascends the Dungeon Tower, determined to create a new legend for himself.

The main character Lei Yu does not have the ability to practice his family’s martial arts. He gets stepped on and tossed around. Due to certain reasons, he leaves the family, coincidentally gains an ability, and makes his own path to becoming an immortal.