The supporting character's harem is very normal - Chapter 28: This is…

After a god screws up and accidentally takes high schooler Shou’s life, he offers him reincarnation with a gift to make up for it. Shou asks to retain all his old memories for the new life. Shou is reborn as Will, a noble’s son in a world where magic use is common and involves knowledge of kanji characters. With all his memories, he’s a brilliant toddler, and when he experiments with magic, he finds that he has an amazing talent for it! What’s more, though he was smart but unloved in his old life, in his new life he has a mother and a father who both love him deeply. His future as Will is looking very bright and cool!

The first time they met they had battled fiercely, just for a mere bunch of herbs. She needed it to save people, and he wanted to use it to save his own life.

“Let go of it, or you will die.” The man’s violet eyes were cold and sinister as he said in a low voice.

She held on tightly to the base of the herb and pulled its roots right out of the ground, before she turned her eyes back with a crafty smile. “It’s mine now. Snatch it from me if you can.”

When they met several years later they were no longer on opposing sides in hostility. In order to repay the debt for having stolen the herb back then, she went on to miraculously cure his body’s condition, relieving him of the inhumane torment that wrecked at his body day and night. He was amazed by the godly skills in Medicine she possessed and his heart went on to fall irrecoverably head over heels in love.

- Description from novelupdates

Lin Yi traveled across the Douluo Continent, and was presented with an extraordinary divine body by the system.

But something went wrong during the fusion!

The divine body was sealed, and what sealed it was actually a shield with trillions of HP!

Only by breaking the shield can the divine body be unlocked.

In desperation, Lin Yi embarked on the road of seeking death, and asked all the strong men on Douluo Continent to fight for him.

The system also guarantees that rewards will be generated based on the amount of blood dropped from the shield.

As long as a reward can be generated, a critical strike will be triggered, and an additional higher quality reward will be given to Lin Yi!

The higher the damage received, the richer the rewards will be!

…

Bibi Dong: “Are you really looking for death?”

Lin Yi: “Really, I beg my sister to work harder!”

Qian Renxue: “I’ll go, you will actually lose treasure if you hit you?!”

Lin Yi: “Your damage is too low to trigger the purple prize pool. If you use a little force to trigger the black prize pool, the red prize pool is not a dream!”

Chen Xin: “I don’t believe that I can’t break Lin Yi’s shield, from now on I will come to kill him twice a day!”

Lin Yi: “Hey, I don’t even bother to expose you, you are clearly looking at the breakthrough spar that fell from the broken shield! Despicable!”

…

Please, please stop scraping! I am in a hurry to break the shield!

Ask online, who is the strongest person on the Douluo Continent, even if the divine body can’t be unsealed, just use the damage to trigger a golden prize pool for me!

- Description from novelbuddy

Eighty years ago, an alien war broke out in Earth’s orbit. A powerful fugitive known as Tree was pursued by an extraterrestrial force. In the battle’s aftermath, the fugitive’s heart merged with Earth’s core, giving rise to a massive tree—marking the dawn of superpowers.Awakening. A phenomenon where humans gained extraordinary abilities. Seventeen years later, nearly everyone had awakened… except a few. Those who failed were called Rejecters, the lowest in society.Zane Carter was born into infamy. The son of a fallen superhero-turned-supervillain, he faced discrimination from birth. He dreamed of being a hero, but his father’s sins made him an outcast. Even after rigorous training, his Awakening failed. Rejected by the Hero Academy, ridiculed, and cast aside—his fate seemed sealed.Until one day…[SYSTEM ACTIVATED]Welcome, User. You have been selected as the recipient of the Borderline Supervillain-Slash-Hero System.Generate your first skill? Y/NWith his newfound system, Zane is given a choice: become the hero they never wanted him to be… or the villain they always feared.