Reincarnated In Mushoku Tensei Realistically Overpowered (fanfic)

A witch who has lived for thousands of years has grown bored with her own life and decided to leave it. Since she is an immortal, her soul cannot leave the world. However, what she can do is transfer her soul to another body. By a stroke of luck, she happens to enter the body of a princess. She was considered a miracle because when the Empress gave birth to her, the princess instantly died, along with the Empress. What the witch didn't know was that she has entered such a predicament. She has to endure the love of the cruel Emperor and possessiveness of the crazy twin princes! What will her life be at the hands of such a loving family? In addition, it seems that this body contains mana that was lost in the royal family centuries ago!

Al, was thrown into another world for no apparent reason. A new world filled with magical things. However, this wasn't the first time he had been reincarnated. He thought he was just an ordinary youth, but it turned out that his identity was so extraordinary in his first reincarnation. There were his harems still waiting for his arrival. Will he meet them soon and what will happen?

A thirty-year-old office lady, who got into an accident and is now trapped inside a novel series she loves. She was reincarnated into one of the side character extras of the story and meets in person the tyrant magician, the playboy prince, and the clueless female lead of the story.

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.

A 25 years old boy named John is suddenly shot by his friend, which results in his death, but is reincarnated again as the new Demon King. Unfortunately, he agains dies in a battle. This time also he is reincarnated but as a human. Follow Vis' adventure as he gets revenge, becomes a demon and makes his own harem.

“Please... Take care of my people...”-Lancelot Ral Constance- Sakamaki Yuu is a gay, middle-aged, disabled man. His vices are what makes him shy away from society, yet he harboured hope for a change in his life. It didn’t get any better. Receiving a report on his deteriorating health makes it feel like the entire world is falling on him. Rather than hoping for a change, he now hoped that he could at least leave a trace on this world, which was what caused him to insist becoming the donor for her nephew. A heart donor, which guarantees absolute death. Yet at the very least, his heart would live well inside her. It’s okay if his heart is the only trace that he left. That’s what should happen. Yet by the time he opened his eyes, he realized that he was reincarnated as one of the mobs that supports the villainess in one of the web novels that he had read, namely Lancelot Ral Constance. Not only that, his character is destined to die in a month by the crown prince’s hand. That being said, how donating his heart has to do anything with him waking up as a completely different person? And what’s with these people calling him a noble? And what’s with this need to appeal his knowledge to help the townsfolk? And why the crown prince is handsome damnit! [Uploading cadence: Every Sunday]