After living for billions of years and reaching the end of everything, Rimuru Tempest realizes one painfully stupid truth: he may have won at life, but he completely fumbled love. He treated everyone precious to him like family, ignored every confession, dodged every chance at romance, and only understood what he was missing when the universe had already gone silent. Watching him drift alone in the void for over three billion years, Ciel finally snaps. With one forbidden decision, she rewinds time itself and sends them back to the distant past, before Rimuru was ever Rimuru. Now reborn as human Satoru Mikami, armed with all of his future god-tier powers but none of his memories, he's thrown into a world that has no idea a final-form god has just arrived way too early. With Ciel now at his side, canon is doomed, fate is panicking, and Satoru's second chance at life is about to become a chaotic mix of mystery, overpowered nonsense, emotional reveals, and harem-level romantic trouble. Because this time, Ciel only has one goal: Make sure her master stops being dense before history embarrasses him again.

Rimuru chooses to return to the past even if he has to erase what he already has to make a better Tempest kingdom than before. Just so he can have even more friends and loved ones then before that he lost, or was not knowledge enough at the time to help grow and become better along with himself and his nation. He also does it so he can make it so paperwork is someone else's problem but he will never say that. Little does he know that doing that gives him an even worse daily activity to deal with... Rimuruism

Hey everyone, this will be quite a typical Tensura reaction. In which a supernatural entity kidnaps the characters and tells them to react. Also, this is like a semi-canon| semi-AU type situation so there might be quite a few things which are like totally different from the Light Novel. If you think there is something that according to you is not canon you don't need to tell me, it is most likely because of the AU.

80 years have passed since Yuuki's defeat. Rimuru, after dwelling for countless years at the end of time and space, has surpassed Veldanava in terms of strength and is, therefore, the strongest being in the Cardinal world. With his strength, he easily dealt with the aftermath of the final battle and accomplished his dream of coexistence between monsters and humans. Although he is happy with the results, his daily routine consists of constant paperwork. During one of these boring days Ciel, who is worried about the mental state of her master, suggests creating an alternate Timeline and traveling back in time. Rimuru, not wanting to do everything over again, comes back with an alternative idea. Going back in time but with one addition: instead of traveling to his original time of reincarnation as a slime, he decides to go much further in time and become one of the ancient demon lords.

Rimuru Tempest start having dreams about Shizue Izawa it's been bothering him everyday he always think about her being alive but even if he can bring her back to life he thinks that his broking the promise he made with her but Ciel suggested that how about he turn back the clock so that he can save her before she gave her last wish and correct every mistake he makes in the past This is just a fanfiction I made because I really love that time I got reincarnated as a slime and there's only few fanfiction about it in wattpad so I decided to make my own fanfic I hope you all like it

This is the story of Rimuru Tempest, he was the strongest being that ever existed and the oldest. he was bored because he was the only one in the void so he created veldanava his little brother, after that due to unfortunate circumstances he has to go into a deep sleep. after he wakes up he finds himself in a strange cave. what will he do? and will everything be the same? I don't own any of the characters and tensura! ( The cover isn't mine)

This story depicts an alternate timeline wherein Velzard attends Walpurgis after sensing Veldora's presence. She subsequently meets our protagonist and becomes interested in him after his display at the meeting. After thinking for a bit, she decides to move to Tempest and becomes a close ally of Rimuru. Rimuru and Velzard will sometimes be out of character since it's unavoidable. Our protagonist will be more rational and have an actual spine, while Velzard will not be as cold and ruthless as her canon counterpart. Besides, Velzard lacks substantial characterization, so I decided to write my own interpretation of her personality based on the original light novel. I recommend at least having seen the second season of the anime, since my story picks up from there. This fanfic will follow the main story beats of the original light novel, so some arcs will be glossed over with minor changes. I'm somewhat OC, so expect a lot of chapter edits or updates, as I tend to reread chapters and catch minor mistakes here and there. (Note that this is Book 1 for the full story.) Also, it goes without saying that I do not own the series 'That Time I Got Reincarnated As A Slime.' Check out and read the original light novel written by Fuse.

In this story in another timeline, Rimuru Tempest found a way to save Shizue and things went well they got married and had a child. However, things did not have a happy ending he tries his best to protect them when the whole world is being destroyed and Rimuru and all the monsters try to save themselves with help from Elyun and Keval partly and some adventures to make a portal to another world/timeline. However, only two people could go in so Rimuru lets Shizue and his daughter go to new timelines where can live happily. However, it seems both mother and daughter landed in a timeline where Rimuru evolved into a demon lord trying to resurrect the dead of the monsters. Join both mother and daughter to enjoy their second chance but the one they call husband/Papa has become a demon lord in their new lives. Rimuru has a second chance with Shizue that he couldn't save in his timeline. Join them if they change the future and live peacefully and what new adventures await them. Ok, there are some fanfics out there where Rimuru saves Shizue and sends her daughter to a new timeline but, What if Shizue comes along with her and lands in Rimuru's evolution into a demon lord what happens then?