How would an alternate ending of Miraculous Timetagger fanfiction change the overall story?

In Chaos City on the Norland Continent, there is a strange restaurant. Here, elves and dwarves share tables. Beastmen are prohibited from making a din, and giant dragons can only seat around the tiny square in front of the restaurant. Even demons have to bring their own stools… But it is such a strange restaurant that has long lines outside every day. Elves are stuffing kebabs, paying no mind to their manners; giant dragons are sitting around a hot pot, strainers in their hands; demons are eating nice-looking dango… "There's no other place on this continent where you can find food like that! The boss here is a genius!" a customer provides such a review. Then, he gives a furtive look at the door. "Also, don't you think of kidnapping the boss away or dine-and-dashing, or you will suffer a tragic death." "Eat, pay, or you will be beaten to death." says a cute little girl in her childish voice as she trots forward. A five-meter tall dragon shivers when it meets her eyes.

[Long Chapters] – 10k-15k (May exceed this with multiple parts) ************** [Current word count]: 3,786,936 ************** [Please note: This novel follows the LIGHT NOVELS and NOT the ANIME.] ************** [Author's Note at the end] ************** For a more detailed understanding of the storyline, kindly read the Auxiliary Chapter for comprehensive insights into the novel's plot. ************** Synopsis: ************** Floating in the void for an unknown stretch of time, our lost soul is reborn into the realm of High School DXD. With amnesia clouding his personal past and no inkling of the one responsible for his reincarnation, join our protagonist on his journey through this new world as he gradually unravels the mysteries of his own history. Yet, a peculiar incident occurs during his reincarnation, further complicating his already unusual fate. This occurrence binds him to another realm, but the question remains: which one? Follow Jin as he embarks on his second life in the Draconic Deus, forging numerous connections, unintentionally becoming a savior of the world, and constructing a fresh existence for himself. ************** “—I won't protect everything. Although, I will absolutely protect those precious people within arms reach. If it's for the sake of that, I will slay everything.” — Jin ************** “—Everyone deserves a future, many can redeem themselves, but I've also come to understand that not everyone deserves that chance.” — Jin ************** Author's Note: ************** The MC is OP. However, this narrative focuses on his personal growth, delving into his emotional and mental development, his battle against self-doubt, and his relentless journey toward self-improvement. This novel places considerable emphasis on world-building, intricate character interactions, slices of life, and the nuances of romance. Brace yourself for a staggeringly extensive harem, featuring a whopping 90% of the female cast, along with some original characters. (Refer to the Auxiliary chapters for more detailed information on this aspect of the story.)

Tang Zhen transmigrated to an apocalyptic world, where humans struggled to survive in various buildings that they built because the ground was covered in lethal dangers that were invisible to the naked eye. Tang Zhen transmigrated along with his mutated cell phone that was packed with miraculous applications. There were all kinds of cities – some could fly in the sky, some could submerge into the ocean while some could become invisible – and shocking secrets were hidden within them. The power of Tang Zhen’s city was… He established a city and quickly leveled up his army with speeding tools. Then, he dominated this alternate world by seizing other cities. He sat at the very top. Beneath his feet was a vast floating city guarded by dragons and surrounded by angels. Countless cannons were also set up at various corners of the city. A million miles ahead, in the depths of the ocean, there was another city as large as a continent awaiting his conquest.

Arriving in this brand-new world, Davion found himself in possession of a system which allows him to level up indefinitely unbounded by the limitations of this world. Lets see what happens when our MC's cultivation is like drinking water, easy and simple. #It is a cultivation novel but not Chinese.#

"In the unforgiving corridors of time, I was brought to the brink, my life teetering on the precipice of destruction. But fate has granted me a remarkable opportunity – a return to the past, a chance to rewrite my destiny. Brace yourself, for when our paths cross once more, the world will bear witness to an unrecognizable future!" Enter the realm of Alternate World, a virtual playground where mere mortals are elevated to the status of gods. The moment this game touched the lives of players, our world, our very existence, was irrevocably altered. People discovered newfound abilities, and playing the game became a way of life, a livelihood. Among those players was Manato Tsukasa, an unwitting protagonist whose life was thrust into turmoil on the eve of his wedding. In the shadowy depths of night, enemies emerged, determined to snuff out his existence. He stood on the precipice of death, only to be granted an unexpected lifeline, a return ticket to the past. With the past before him like an unwritten book, Manato seized this extraordinary chance with relentless determination. Armed with the knowledge of his past mistakes, he embarked on a journey to exact revenge upon the architect of his misery. The game that had once been his escape from reality now served as his crucible, transforming not only the gaming industry but also the very fabric of our world. Yet, little did Manato suspect that Alternate World held secrets far more profound than any player had ever imagined. The game's mysteries ran deep, and the truth, obscured beneath layers of illusion, remained tantalizingly elusive. As he delved deeper into the game's enigmatic depths, Manato would soon discover that the lines between reality and virtuality were destined to blur, forever changing the course of his life and the world itself.

The world Star King Dragon Veldanava created was supposed to get a small unassuming slime with great potential. However, fate seems to be whimsical sometimes and gave the unprepared world a vast dungeon full of beings, both wondrous and terrible. Nazarick, knowingly or not, is bound to reshape the very foundations of the world.