The supporting character's harem is very normal - Chapter 451 Ancestor’s Oath

“What! The young master has married another concubine?”After Gu Changge is bound to the system, sharing innate talent and even cultivation results with a Daoist Couple (wife) is possible. Whether it's consuming elixirs or treasures from heaven and earth, or from daily cultivation, everything can be shared!“Just by binding with one partner, I went from a waste to a spiritual body. What if I had multiple partners?”Since that day, he realized that working hard in cultivation was not as effective as taking in more spouses, and that taking elixirs himself was not as good as feeding his wives!The aloof and warm-hearted sect's holy maiden, the playful imperial princess, the dragon race's transformed girl with white hair...【Your Daoist Couple has cultivated through the night, shared cultivation progress!】【Your Daoist Couple has grasped the essence of swordsmanship, shared insights!】【Your Daoist Couple has consumed a supreme snow lotus, comprehended a law, shared!】【Dual Cultivating with your Daoist Couple, rewards...】(Disclaimer: Dual Cultivation is a unique method of cultivation where a man and a woman cultivate together by having sex)As he feeds his wives every day with ease and pleasure, he unknowingly becomes a celestial being, perfects the holy body, and stands above all living beings!(The story is focused on daily life, is lighthearted with a touch of humor, and does not stress the protagonist)

After making preparations for transmigration into the VR world “Mystical Era”, the previous veteran player Xia Yuan becomes an NPC, and is even made the fourth son of the Duke of the Empire!Already prepared for a boring aristocratic life, he never expects that the era has totally changed!As the last obstacle, his family has been labelled as a villain by the new aristocracy and will soon be crushed by history! Xia Yuan has no choice but to gradually strengthen his own power according to his knowledge of the game's history.Lost treasures, forbidden ancient weapons, secrets of immortality, forgotten epics...With one's own strength, save the world! Change fate! Rise from the ashes!...The knight swears, the mage sings, and the dragon spreads its wings!Pursue magic and truth, and control the fate of yourself and the era!Stand in the clouds, above the floating city and the throne of the sky!The bell rings, and the signs finally appeared.-It’s time for the stars to align-

Pian Pian had once been the biggest bigshot in the whole game, but had disappeared from the Jianghu after being framed.

Soon after, she bought over an account online from the xianyu app, and got ready to raise up this old player’s account. But then she realised that the former user’s online relationship had also been a real-life relationship – with the former user having aborted her scum husband’s baby. Her own female disciple had used her to climb up, and then repeatedly killed the former user to the point that she couldn’t take it anymore and sold her account – it had really been excessively cliche. Pian Pian felt that her plan to abuse the cheating scum husband back, was somewhat refreshing.

Former User’s Husband: “She’s not like you – she’s very innocent. If you have anything to say, say it to me instead!”

Pian Pian: “There’s no need, happy divorce!”

Former User’s Husband: “Ai, why’re you forcing yourself to act strong.”

Pian Pian: “I’m not forcing myself, this is completely real strength. After all, I’m the game’s strongest woman[4].”

Former Disciple: “Hubbie, did you hear her? She said that she’s Boss Han’s woman! Let’s help her spread this happy news around!”

Pian Pian: “Wait, I think you read that wrong!”

Later on, she who had dealt with the gossip surrounding her and Boss Han, had actually met the real deal.

“Pian Pian, I heard that you wanted to become my woman?”

“…You think that’s possible?”

“Of course.”

Under the gaze of thousands, she received a message from the game system.

‘Yi Chuan Han Xing wants to do a pair action with you: forcibly kiss. Do you accept? [Yes] [No].”

- Description from Novelupdates

There’s the so called class transfer.

Among the high school students that were given cheat abilities, Kirishima Ran was given 『Underling Training』for some reason, a skill that can make a woman a slave.

Ran who was driven out by the kingdom using an absurd reason will make use of the given skill freely to take revenge on his classmates, release his desires (This is mainly the reason), and fight off the world’s system.

It’s a story of him using his wonderful skill making his classmates turn to an obedient cute and lewd slave.