The supporting character's harem is very normal - Chapter 464 God’s Eyes

Shao Qing’s only regret in life is that she blindly fell in love with a worthless man. She gave up everything for him, but in exchange was run over by his conniving mistress when she was close to her delivery date. Fortunately, Heaven left her a way. Crimson rain fell from the sky, the end of the world arrived, she resurrected in the morgue and gave birth to a little monster. Turning into a half human, half zombie freak; her son neither human, nor monster; they have no other choice but to rely on zombies’ crystal nuclei to develop their special abilities and continue living. This debt, she’ll definitely repay that cheating couple!

- Description from Novelupdates

“Son, do you know what this is?”

Thanos raised his golden gloves, and the six Infinity Stones shone with pleated radiance: “If I snap my fingers, you will turn into dust in the wind.”

“Dad doesn’t believe it.”

Fang Mo, who was wearing an endless suit, slowly shook his head, and pointed the Universal Sword in his hand at Thanos Nawa’s bright purple head: “Don’t talk about the Infinity Stones today, even the Heart of the Universe can’t save your dog’s life!”

“Do you know what this is? This is the begging jade!”

Madara Uchiha stood in mid-air and laughed wildly: “It is the strongest spear and the strongest shield, there is nothing it can’t destroy!”

“You really haven’t seen anything hard…” Fang Mo took out a piece of bedrock with a grinning smile: “Dare you dare to compare with it!?”

“Is this… the Sage’s Stone?”

Edward stared blankly at the red crystal in front of him: “Can it ignore the law of equivalent exchange?”

“Well, in a sense, it can only be regarded as the basis for an equivalent exchange.”

Fang Mo touched the portable conversion table in his hand: “But if you want, I can consider sending you a set.”

…

When the fourth natural disaster met the mysterious island module, the cube man finally began to bring disaster to the world.

(To reiterate, the stand-in is Steve, the protagonist of Minecraft, not Captain America, this is the MC text…

- Description from novelbuddy

Hundreds of years ago, Human, Celestial Clan and Demon Clan lived together on the Origin Continent. However, a great war broke out between the three races. Shan He, the leader of Human, had discovered a catalogue of methods to forge Divine Weapons. With this catalogue, Shan He led Human to defeat the other two clans and expelled them from the Origin Continent.

The peace did not last long. After the passing of Shan He, the once Glory Empire collapsed. Various forces of Human fell into a long period of wild war for the Divine Weapon Catalogue, but the catalogue was lost during the war.

The Demon Clan took advantage of the internal strife of Human. Under the lead of their new lord, Fen Tian, the Demon army invaded the Origin Continent violently.

Human soon lost a large portion of their territory. At that moment, a mysterious hero suddenly appeared on the battlefield. With a legendary Divine Weapon in hand, he severely injured Fen Tian and forced him to retreat. The united Human army chased the Demon army across the strait and to the Two Realm Plain on the Tranquil Continent.

Once again, the various forces of Human started wildly searching for the Divine Weapon Catalogue…

- Description from Novelupdates

Dong Xi transmigrated, but she was neither the female lead nor the villainess, but a tragic side character in a book. Even though she was a proper rich daughter, her mother used her as a substitute for her youngest sister, and sent her to train as a cultivator at the top cultivator sect in the world. Though she was initiated at eight years old and trained for eight years, she was talentless and didn’t have much experience. Eventually, her younger sister was recruited because of her outstanding talent, while Dong Xi was banished after it was revealed that she was just a substitute.

After that, someone caught her, imprisoned her, and tormented her for two years just because she was attractive. Though she was rescued by a senior disciple from the cultivator sect, it turned out that he did it to avenge her younger sister, and tortured her to death. When Dong Xi transmigrated, it was just after she was initiated and began life as a cultivator. She decided that she would do her best, improve her cultivation, and survive! Eating? Sleeping? All that was a waste of time! If there was a cultivator who practiced sword cultivation a thousand times per day, she would do two thousand!

Eight years later, when her younger sister was recruited for her talent, Dong Xi promptly packed her bags and left, leaving the cultivator sect panicking and wondering who had taken her away! Su Cheng, the most powerful demon lord: Who dares harm my beloved wife?! This means war! Dong Xi, still running away: What? Who are you? Su Cheng: Don’t you remember the snake you counted stars with years ago, beloved?