The supporting character's harem is very normal - Chapter 460 Arriving at the Academy

In a world torn apart by rifts that release dangerous monsters, Espers—humans imbued with powerful abilities—serve as humanity's last line of defense. But the power of an Esper comes with a price. Overuse of their abilities leads to dangerous corruption, a force that can destroy them from the inside out. This is where Guides come in: individuals with the unique ability to calm the corruption within Espers and restore their balance.Rowan Mercer, an S-class Guide, is one of the best in his field, capable of stabilizing even the most dangerous Espers. He has worked quietly behind the scenes, helping those in need, but his life takes a dramatic turn when he is called to work with Lucian Vaughn, an S-class Esper whose immense power and unstable corruption levels make him a dangerous threat to himself and others.Lucian, a tall, stoic, and enigmatic figure, has long fought against the growing corruption within him. At first, his relationship with Rowan is purely professional—Rowan as his Guide, helping him to stay in control. However, as their interactions grow more frequent, their bond deepens in ways neither expected. What started as a simple duty soon turns into a complex relationship where power, trust, and vulnerability collide.As the world around them faces escalating threats from rifts, Rowan and Lucian must navigate not only their personal challenges but also the dangerous world of Espers and Guides. Their bond will be tested as they fight together against the corrupting forces that threaten them both.In Corrupted Bonds, survival isn’t just about battling monsters from the rifts—it's about fighting the darkness within themselves and finding a way to stay connected in a world that’s constantly pulling them apart.

"Lu Lijun! what're you doing?"

The people of Dafang village all say, the personality of the Lian family’s eldest daughter changed dramatically after her engagement was cancelled by her fiance’s family. She became extremely forceful and unreasonable. After hearing this, Lian Fangzhou secretly thought: Forceful? My parents are dead, my little brothers and sister are still young, with no one lending a helping hand, there are too many people looking to bully us showing up at my door! There’s still the most shameless pair of uncle and aunt eyeing our few acres of land, and even scheming to sell me off as a concubine! Treating my siblings as servants at their beck and call! If I was not forceful, how would we be able to live in peace? Don’t tell me that I should act like the previous Lian Fangzhou and die from extreme anger? In order to quell this bunch of demons, break out a wide path to walk on, angelic faces are useless, only the tricks used by malevolent spirits are the way to go!

- Description from Novelupdates

This novel is also known as Gu Daoist Master

Humans are clever in tens of thousands of ways, Gu are the true refined essences of Heaven and Earth.

The Three Temples are unrighteous, the demon is reborn.

Former days are but an old dream, an identical name is made anew.

A story of a time traveler who keeps on being reborn.

A unique world that grows, cultivates, and uses Gu.

The Spring and Autumn Cicada, the Venomous Moonlight Gu, the Wine Insect, All-Encompassing Golden Light Insect, Slender Black Hair Gu, Gu of Hope…

And a great demon of the world that does exactly as his heart pleases!

—

*Gu (蛊) referred to poisonous insects in various cultures in South China while in folklore Gu spirits could transform into all kinds of species.

- Description from Novelupdates