The supporting character's harem is very normal - Chapter 465 Friendly Points

Once an unsung slave; Yur’s existence was defined by blood, pain, and chains. That was until he stumbled into Zulmasharr, the realm of demons.In the depths of despair and agony, a near-death encounter unsealed the terrifying truth of his existence; he is no mere mortal. A cursed hybrid of human and demon; Yur’s survival was only possible through the bloody rebirth of his Ashkavaal bloodline and the awakening of his sinister cultivation system, Zul.With Zul, Yur can rear demons for rituals, harvest their power, and dominate the chaotic world around him. But freedom comes at a cost. As the incognizant successor to an ancient being, his every step is burdened by the weight of a destiny he never asked for. Yur craves only one thing: to stay free, unbound by demons and men. Yet his growing power and severed bloodline ignite the fascination of forces that would see him enslaved or slaughtered.Yur must steer through a world of demons where trust is a fault, survival is animus, and his very existence is a blemish. Blood will pour, flames will revolt, and demons... they kneel or die. But in the end, is freedom attainable for the bearer of a bloodline forged from blood and ash?Will Yur vanquish his fate or will it condemn him?

A good-for-nothing man married a beautiful girl but was kicked off the bed on the wedding night. Furiously, he wrote a bill of divorce and ran away.
He was schemed a car accident in which he nearly lost his life. However, it turned out to be a blessing. He swallowed the soul that passed through the outer world, thus obtained superb medical skills and martial arts.
Later on, with the silver needles and invincible martial arts, he embarked on the road of counterattacks and was committed to his great dreams.

- Description from Novelupdates

Year 2056, in a city in the Yuan Jiang Su Jin area. On top of a ruined, shattered six story residential apartment sits a teenager wearing a combat vest, militaristic trousers, and alloyed battle boots. On his back is a hexagonal shield and equipped is a blood-shadow battle knife. He sits there silently on the edge of the roof. At this time, the sparkling sky was shining and there was a refreshing breath within the air that blew towards him. However, there was only silence within the ruined, deserted city, with an occasional howl that makes your heart skip a beat.

*Caution**TABOO CONTENT**STRONG SEXUAL CONTENT*THIS CONTENT IS VERY HARMFUL FOR A NORMAL PERSON'S MIND.__________________________________Leon is a MILF lover, an orphan and a virgin.He has a single goal in his mind, Fuck a MILF who is not a prostitute.But, Unfortunately before Leon could've completed his dream, he died accidentally due to an Angel's mistake.In order to make up for his mistake, The angel promised Leon another life in a magical but rather backward and undeveloped world.He let Leon choose three skills of his choice.[Skill Crafter (F)]“You can only craft F-rank skills with this, are you sure you want this skill ?” The angel asked with a confused expression.“Yes.” Leon replied.[inspect][Adaptive Body]...With these three skills Leon's soul possessed the body of Leon Luster who has a widow MILF step-mother and a married busty hot step-sister whose husband only comes home once every year.“Wait... so in this world Sex is like a five minute duty ? that means women here don't know anything about pleasure ? hehehehe.”“what do you mean we have no bed and have to sleep together on one matress mom ?”“I can't take this, let's make a skill...”[Touch Of Lust]Will Leon make his dream come true ? or will he get more than he asked for ?[NOTE: COVER IS NOT MINE, IF THE OWNER WANTS ME TO REMOVE IT. I WILL DO SO IMMEDIATELY.]