The supporting character's harem is very normal - Chapter 282 What I need... is you.

Traversing into the world of “My Hero Academia”, the awakened personality is actually a stand-in [World].

In the face of the invitation from All Might, Wu An said: “I have no interest in heroes, I just pursue power, and I have nothing to do with women.”

Facing the provocation from ALL.FOR.ONE, Wu An opened his arms and summoned his stand-in.

“THE. WORLD! Time! Stop!”…

- Description from novelbuddy

Collecting legendary antiques, retracing the mysterious martial arts. From the moment he activated his cheat, Casio knew that he was no longer ordinary.[Legendary Antiques: Wind Elephant Ivory Pendant]Seventy years ago, in the North Flow Country of the Hong Li Federation, at the Wind Elephant Gate Youth Training Camp.“Li Wei, you are a coward! On the day your sister was brutally murdered, you were trembling in a corner! On the night of the Sect Destruction War, you disgracefully fled! During the many long years of revenge, you missed the opportunity again and again!”“Now let me teach you what bravery is, let me tell you how to turn suffering into your power. I hope at the moment you behead your enemy, you will remember: you are a man, an upright man!”The taboo era, hidden legends. A Foggy continent paralyzed by the sealed land. Countless brilliant antiquities wail in the ruins.I will witness your lost legends in the mist, the knights in the sky, the ghosts in the desert, the rats in the mud. The direction of sword fights points to the light, and flowers will grow where bullets fall. The winds of history will eventually sweep away the rubbish from the era's gravesite.

With his engagement at hand, the most terrifying and legendary person of the legal world, Fu Huai’an, returns with a son.

Before the engagement…

He asks, “Since you love Wen Moshen, why are you in my bed?”
She says, “Because I cannot watch idly as Wen Moshen’s woman enters an engagement with you.”

With a cigarette in Fu Huai’an’s mouth, he crosses his legs. Across the light cloud of smoke, he squints his eyes—watching as Lin Nuan’s slim arms wrap around his neck; he feels stirred.

So a person can love another so passionately.

“You call what you did a kiss?”
“…”
“What a pure lady!”

Fu Huai’an spews out a cloud of smoke and snuffs out the cigarette. With a mellow voice, he says, “Let me teach you what kissing is!”

But, what he teaches Lin Nuan doesn’t seem to be only a kiss…

- Description from Novelupdates

Dying in a tragic accident Marcus Ferrous gets transferred to a fantasy world of monsters and magic, except when he arrives contrary to what he expected he is now level one and a ghost. Left with nothing on a strange new world, Marcus will struggle with everything he has on his journey to get stronger and uncover the secrets of his new world.