Demon King Ascension System

After leading his nation to victory and earning the title of War God, Scott Grayson turns down a grand celebration to return home—back to the woman he’s loved and waited for through four long years of war. But nothing could prepare him for what he finds. The house he once shared with his wife has been sold. She’s disappeared without a word. And when he finally tracks her down, he’s met with an even more devastating truth—Laura is living in luxury, engaged to another man, and planning a wedding. She doesn’t know he’s the hero the entire country is celebrating. She doesn’t know the sacrifices he made for her, including the years he spent behind bars for a crime she committed. Now, Scott is back—not as the broken man who left, but as a legend. And he wants revenge.

BOOM!!! An atomic bomb goes off, lucky for Cumas, a window saved him. It appeared just in his class and told him to go to a bunker and when it went of, Cumas felt lucky having his own system protecting him, or is it? He has to complete quest to survive if he wants to stay on the safest place on earth, the bunker.

The world was invaded by monsters that suddenly appeared all over the world and a system-like software had been installed on some humans' intelligence by an unknown force. The war between monsters and humans was bloody and two billion people lost their lives. Jianyu, who was at the bottom of the power ranking of the Upgraded Humans with his team, was preparing for a future where he would lead humanity against this extraordinary enemy...

Willing to work hard and spend all his savings to give his fiancée, Evelyn, a gift she would like on her birthday, Elric was met with a bitter reality. He was betrayed. However, more than that, Evelyn's cold attitude was far more painful than her family's harsh words. When he was cast aside, he suppressed all the anger in his heart until a system of patience and resilience emerged. A system of life endurance. This system forbade him from seeking revenge, but it slowly made him unstoppable. The cowardly Elric was forged into an extraordinary figure who was challenging to defeat.

have you ever fantasized about having a system? what would you do if you have one? would you use it for yourself alone or would use it to make the world a better place the story is about a boy who was bullied in his school for being weak, his story changed after he luckily got a system do you want to know what he did with his system? Read the book to find out for yourself

After suffering a heat stroke, Blake, a hardworking but poor university student, mysteriously acquires a high-tech system. Overnight, his mundane university life transforms into a whirlwind of success. Master’s degree? Check. PhD? Easy. From a nobody to a scientific sensation, he ascends to celebrity status. But as he delves deeper into the system’s missions, he realizes his journey is far from over. Can he achieve the ultimate glory of a Nobel Prize? Blake's quest for knowledge and fame is just beginning, but the system holds secrets that could change humanity forever.

"Who am I?"... Born extraordinary powers that gravely superseded any race born into existence, Evox Delhade embarks on a journey of self-discovery, in am attempt to learn the truth and secret behind his ability and existence.

Regal Regal on his eighteenth birthday finds out that his real parents are unknown and he has the magic of both demons and angels in his body. He sets on a journey to find about his origin.....

"Twilight" a fictional character came from Role Playing Game called [Tales of the Legion Heroes] He was an overpowered mob character that can surpass the main character in the storyline. One day, Mr. Daisuke died officially on Earth and was reincarnated inside the body of 17 years old "Twilight" Because of an unhealthy lifestyle and bad habits like overworking his body by playing the game to pay the several million of debt from the loan shark. He was given a second chance by the God & Goddess of Asgard and summon to another world similar and at the same time different from the so-called Earth. [AETHER] 'A world that revolved around the main character!' 'If you are thinking that I was just a mob character who has no role in the storyline then you are wrong.' 'Even if I have no role in the storyline doesn't mean that I cannot surpass the main character or the protagonist.' 'I will use my profound knowledge and wisdom to clear the Impossible quest and mission.' 'I will hoard all artifacts and treasure that are found inside the dungeon.' 'I will climb the top step by step and reach the height that humankind never reached before.' 'Lastly, I will support the main character from the shadow and change their shitty ending that destroys this world.' 'I shall let the world know my name [Twilight] The Dominator, who will soon become the living legend of Nine World Realm.' 'Just hearing my name brings justice and order to the land while making enemies tremble in fear!' 'Twilight will annihilate all enemies before him!... mark as a true hero of Midgard.'

When two civilizations clash with each other, a college student who was at the very front among his peers in his study experienced something he would never have thought of in his wildest dreams. After his second death, he returned to the place where he should have been but everything was unfamiliar to him. Not to mention, his way of using his new power makes him caught up in war he would never have expected. Would he be able to adapt in the new world or shall he be swallowed by it? And would he be able to uncover the truth of the invasion to his planet and deal with those who wished him harm from the underworld organization?