MTL - Red Dragon Roar - Chapter 325 Tiamat's back

In the Jiuxiao Continent, martial arts is respected. The weak are like ants living in the ruins of dark alleys, while the strong are like dragons roaring and gathering at the top of the clouds. The laws of this place use blood as ink and bones as inkstones. A three-foot-long sword can split the sun and the moon, and a murderous thought can stir up a bloody wind. There was once a drunk madman who trampled eighteen royal cities to pieces. Wherever the sword pointed, thousands of miles of mountains and rivers were dyed red. There was also a saint who lowered his eyes to calm the nine thunder tribulations, and with a flick of his sleeves, a golden lotus suddenly appeared in the abyss.

Teresa is a timid human whose life has been a series of unfortunate events—until she meets Lucian Blackwood, a very rich and handsome man who awakens a deep, unexplainable connection within her. But Lucian, an alpha werewolf with a haunting past, is repelled by Teresa’s perceived weakness, blaming weakness for the tragedy that shaped his life. Unable to accept her as his mate, he rejects and humiliates her, leaving Teresa shattered.Just as she’s picking up the pieces, Adrian Daegon, an ancient vampire with his own dark allure, steps into her life, determined to win her heart. Now, Lucian is torn with regret, desperate to reclaim the woman he cast aside. But to do so, he must face a powerful vampire and confront his own fears—while somehow convincing Teresa to forgive his betrayal and reignite their lost bond. Can love and redemption overcome the scars of rejection, or has Lucian's cruel mistake cost him his mate forever?Torn between two powerful forces, Teresa must decide where her true destiny lies—in the fierce grip of the wolf who scorned her or the dark embrace of the vampire who vows to adore her.

He is a young man without a spirit root. It is believed that this denies him the chance at cultivation. However, a mysterious lady imparts a Supreme Demon Classic to him and from then on, he starts his path of cultivation.
He undergoes a total transformation to emerge as the most fearsome and powerful fiendish demon in his era, that even immortals and fiends are fearful of him, and saints are at his beck and call.
Mastering the Supreme Demon Classic is the turning point in his life. He is able to unleash his immense and divine power from within, illuminating the entire universe!

- Description from Novelupdates

Suzuki, an adult programmer, suddenly notices that he’s been thrown into a different world while wearing a casual clothes at level 1. He gained high levels and treasures after using the 3 times use-disposable-magic, Meteor Shower, once. After that he intends to do different world “sightseeing tours”? He meets 3 beast girls, beautiful purple and black haired sisters, and an eccentric blonde haired elf girl along with various people during his trip. Although there are occasional fighting with demons and demon lords, this is a heartwarming fantasy story at heart.