Best Overlord Fanfiction Crossover With Konosuba?

Princess Zayla was the price of a debt her father couldn’t repay. The man he owed wasn’t ordinary. Lord Asher, cold, cruel, feared in every kingdom, didn’t want gold or lands. He wanted her. And so she was sent into the arms of the man everyone whispered about in fear. Could she survive him? Could she soften the ice around his heart, or was she nothing more than a pawn?

CAUTION! ❗️⚠️DARK ROMANCE. MULTIPLE STEAMY STORIES* Through Realms of Sins is a collection of taboo and steamy stories where passion knows no boundaries. In different worlds and timelines, an Omega woman becomes the obsession of powerful Alphas: CEOs, kings, mafia bosses, and supernatural beings.Every story would whisk you away into a world of dark romance and irresistible desire, where the lines between love and lust fade away. The Alphas are dominant, but the Omega is no helpless prize, challenging their control and unleashing parts of them that didn't even know they existed.This is an Omegaverse anthology filled with tension, power play, and fiery passion. Each story is hotter than the last, each loves a battlefield of strong desires. Enticing you through Realms of Sins which will leave you breathless for more.

Sheeran, a 16-year-old boy, lived until he was killed for a stupid reason. ( stupid reason & more in the prologue:v ) But it seems that fate had stored different things for him as after death, His soul transmigrated to another world inside a dead body of a boy with the same name and same facial features as him. He also found out that a mysterious black whirlpool seemed to be inside him and connected to his soul. After the short unfortunate first life, he starts living his second life with more suffering that he chooses himself to get stronger but with that also comes happiness he had never experienced. A smooth sailing second life of Sheeran starts with something mystical inside his body and other benefits of it that could make him stronger with some suffering. However...he didn't know that due to his soul ( That was supposed to return to the source of the universe after death but instead, it transmigrated by someone for some purpose and that caused an adverse effect like increasing misfortune on his soul ) The benefits he receives ultimately becomes the source of his second doom that is even worse than death. But...that's when the future revoked overlord is born.

Arianna had not planned on using magic to summon anything, she just wanted to get out of an arranged marriage. She was told of the ancient magic of summoning a guardian but instead she had summoned a demon—the demon king himself. But what would he ask in return for his loyalty to this princess?

Evy was a simple-minded girl. If there's work she's there. Evy is a known workaholic. She works day and night, dedicating each of her waking hours to her jobs and making sure that she reaches the deadline. On the day of her birthday, her body gave up and she died alone from exhaustion. Upon receiving the chance of a new life, she was reincarnated as the daughter of the Duke of Polvaros and acquired the prose of living a comfortable life ahead of her. Only she doesn't want that. She wants to work. Even if it's being a maid, a hired killer, or an adventurer. She will do it. The only thing wrong with Evy is that she has no concept of reincarnation or being isekaid. In her head, she was kidnapped to a faraway land… stranded in a place far away from Japan. So she has to learn things as she goes with as little knowledge as anyone else. Having no sense of ever knowing that she was living in fantasy nor knowing the destruction that lies ahead in the future. Evy will do her best to live the life she wanted and surprise a couple of people on the way. Unbeknownst to her, all her actions will make a ripple. Whether they be for the better or worse.... Evy has no clue.

Serra is a normal senior high school student who works really hard every night and weekend to pay off her parents' debts from loan sharks. But when she couldn't keep up with payments anymore, she decided to end her life. Surprisingly, she woke up in a different light-- in another world. What's more shocking was when she is addressed by one of the people as the demon king's bride.