MTL - Billion Technology Crystal System - Chapter 772 : 5 years is enough! Be sure!

"Magic is believing in yourself, if you can do that, you can make anything happen."

Ikaris, a genius student admired, exploited, and hated all his life for his brilliance, suddenly finds himself transmigrated into The Forsaken Lands, a fantasy world of myriad species born with the ability to use magic with imagination as their only limit.

Alas, this gift carries a curse. The more you use it, the closer you are to death.

After thousands of years of decline, the Free Races are fast approaching their demise, their survival threatened by this curse and an enemy that will not rest until it has devoured them all. Literally.

Former allies and enemies, prey and predators are now cornered behind a huge wall, forced to collaborate to resist their invader. But can so much resentment and hatred be washed away so easily? Can predators and prey really overcome their instincts in the face of a common foe?

Follow him on his journey from an ordinary human to a shining existence that will overturn the order established since the dawn of time. From an innocent soul to a merciless demon. From a human to something else.

The unparalleled Demon King Ye Xuan, who was able to heal the death or the living alike and holder of the medicine Holy Scripture, was betrayed and killed by his fellow Demon Kings. But he reincarnated into the body of Ye Xuan, the prodigal son of the Ye family and vowed to himself that he would return to his peak and take back everything that belonged to him!

- Description from Novelupdates

Lin Luoran is a 27-year-old girl from a rural family. She doesn’t have a college degree, let alone any money.

agreed. He thought they might just talk, have a few drinks, and that nothing significant would happen. However, she invited him to a hotel, and they spent the night together.The next morning, she told him it was just a one-night stand and that they would probably never meet again. She said goodbye and left. Ronan also decided to treat it like that.The next day, at his college's hosting club, Ronan was given the responsibility of hosting that year's annual function, where they had invited a singer.When Ronan looked up at the singer, he was shocked—it was the same woman he had spent the night with. After checking her history and social media, he formed an impression of her. Every picture she posted was in revealing clothes, bikinis, or almost nude outfits.He concluded that she was just a promiscuous woman, likely driven by lust, and that she had probably chosen to spend the night with him simply because she found him handsome.Understanding this, Ronan decided to focus on his work. That morning, she had made it clear that it was just a one-night stand and nothing more. He would treat it exactly that way and carry out his responsibilities.Protagonist has System---No NTRIt's Harem, with many girls but The Singer is Main Heroine.