What Sci Fi Fantasy Novels Explore Interdimensional Worldbuilding?

What will you do if you somehow were able to travel between two world?. Harem? Wealth? Power? Adventure?... Sai Mies was able to travel between two worlds Earth and Fantasma, With that ability he swore to changed his mundane life to the better. Each steps he take will bring him closer to his aim, to become the most wealthiest and powerful man in both worldsP/s The image wasn't mine, i wil take it down if asked to. :) tq. also i was invited by the GoodNovel Team to post my works here, so i guess why not. I'm not an english speaker, jusy a heads up.

Liora An orphan with no memory of who she once was, Liora’s life changes the night a tragic accident rips her from the human world and casts her into a realm of ancient fae magic. Alone and disoriented, she awakens in a kingdom of glowing crystals and whispering forests, carrying only fragments of dreams she cannot place. Yet beneath her quiet confusion lies resilience. Liora is not fragile. The magic of this new world responds to her in ways no one can explain, hinting that her lost past may be far more powerful—and dangerous—than she realizes. Corin Corin is the warrior who finds Liora broken and frightened in a world that would have swallowed her whole. He becomes her protector, her guide, and the first person to make her feel safe. Their love grows fiercely and quickly—born from survival, trust, and shared hope. But their happiness is short-lived. When the Shadow Demon King rises, Corin stands between darkness and the woman he loves… and pays the ultimate price. The Shadow Demon King Ruthless. Cold. Bound to Liora by fate itself. The Shadow Demon King is her destined mate—and her greatest enemy. He seeks to destroy her kingdom and crush any weakness within himself, including the bond that ties him to her. Yet the deeper his hatred burns, the stronger the pull between them becomes.

Eleand Altierra considers himself the luckiest man alive. He is a young multi-billionaire business tycoon from a well-known family, and he is married to a hot supermodel. But a series of unfortunate events happen in his life—it involves him in a vehicular accident with his sister. When he regains consciousness, he is in a strange place. The creatures he sees around are not entirely human—their beauties are ethereal; some have wings and deadly weapons! He is in Erganiv. A hidden realm wherein distinct races of faeries live. Eleand needs to come back home because he is just a lowly human unfit to stay in their world. But he discovers the dark secrets lurking in his blood, and his quest for survival begins. Will he abandon his humanity? Because in this magical world, he found his mate…

One moment he had just read the strangest book he had ever come across, the next he was stumbling into the world of that same book. Now Mars is trapped in a fantasy world as a nobody, and the gorgeous, cruel Crown Prince who just kidnapped him thinks he's a spy. Keith Elarion's solution? Keep Mars under his personal, infuriatingly attractive supervision. Mars’s plan is simple- survive, avoid the plot, and find a way home. But the prince is nothing like the two-dimensional villain from the book. Keith is all intense green eyes and confusing, rough kindness, and he’s decided Mars is his to keep. When Mars accidentally unleashes a power he should not possess, he becomes the key to a conspiracy that runs deeper than the novel ever revealed. His meddling changes everything, accelerating a plot that was supposed to take years. To top it off, a cryptic bird-god just told Mars he's not just a lost college student. He's the son of the goddess who made this world. To save Keith, stop a divine war, and maybe finally kiss the man he falls hopelessly in love with, Mars has to do the one thing the book never planned for: he has to rewrite fate itself.

Leaving your world and coming to another all seems wrong and right. Sophia had to leave Marazona to Earth to avoid death in the most cruel way. Everything on Earth seemed weird to her and she seemed weird to Donald, the son of the woman that took her in. But, let's see how Two Worlds are Connected.

Beyond His World A chance encounter between an ordinary young woman and a mysterious man from another world sparks a love neither of them expected. But when he is forced to return to his kingdom to protect his throne from a power-hungry uncle, they are torn apart by duty, destiny, and the boundaries between their worlds. As dark secrets, political betrayal, and an ancient prophecy unfold, they must fight against impossible odds to reunite—before both worlds are consumed by a war that could destroy everything they love.