The ancient Demon Lord Rimuru
CriticalCraft
  • Reads 37,225
  • Votes 1,382
  • Parts 26
  • Time 2h 25m
  • Reads 37,225
  • Votes 1,382
  • Parts 26
  • Time 2h 25m
CriticalCraft
Ongoing, First published Jul 23, 2024
Mature
1 new part
ancientbackintimechangecieldemonlordfanfictionguypastrimuruslimetensuratimetimetravelvelzard
More than 200 years have passed since the war between the Empire and the victory over Ivarage. Rimuru is currently sitting in his office, bored out of his mind. His loyal partner Ciel sees his situation and gets an idea that can solve Rimuru's boredom. Come along on your journey as Rimuru travels over 20,000 years into the past to become an ancient demon lord.
All Rights Reserved
ancientbackintimechangecieldemonlordfanfictionguypastrimuruslimetensuratimetimetravelvelzard
Table of contents

26 parts

Sign up to add The ancient Demon Lord Rimuru to your library and receive updates
or
Content Guidelines
You may also like
The Destined One by Rimuru6360
28 parts Ongoing
The final battle with Ivarage was, to put it briefly, catastrophic. The majority of the Cardinal World and Tempest were gone. Only people with True Dragon Level strength were alive...Diablo was the only one of his subordinates who was still alive. In desperation, everyone agreed to buy some time for Rimuru to jump into the past and alter the outcome of the battle. So Rimuru, who has forgotten everyone yet remembers everyone, has jumped into the past. But the price of jumping into the past without Ivarage following him was to heavy... all of his power has disappeared. Now, a slime with two unique skills and the memory of a novel called Tensura has begun a new journey in the distant past, when Veldora was just born.
That Time I got Reincarnated As A True Dragon by nautymanu
107 parts Ongoing
After achieving peace Rimuru was stuck doing paperwork for the last few centuries and was stuck with boredom. Ciel seeing her master's state suggests going back in time to the era when Veldanava created the cardinal world. I don't own Tensura. I adjusted the story to my liking. English is not my main language so don't bother about grammar mistakes too much If you guys want to read advanced chapters go to my Patreon account. patreon.com/Nauty_Manu
Rimuru's restart new game plus omnibus by puddingnepp
46 parts Complete Mature
After 50 years Rimuru has gotten bored with his peace time and has decided to new game plus his world after asking to set certain settings via ciel to make it more fun he jumped back in time to begin his new game
Perfected Tempest by Legandaryus
69 parts Ongoing Mature
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
Rimuru The Void God In The Future Past by SokvanHD
15 parts Ongoing
After Feldway send Rimuru to the end of time and space Rimuru decide to find a way to go back when he's wake up but Ciel tell him that his timeline had already destroyed so he cannot go back after hearing that Rimuru start to feel a lot of emotion inside him sadness regret and pain all the emotions you can think of come to him at once and start to make him go insane Ciel after seeing this decide to seal his memory away and cause him to go to a long sleep, and when Rimuru wake up had no memory of anything about himself only his name start to go on his own journey
Rimuru's boredom and his regrets(Time Travel) Tensei Shitara Slime Datten Ken by Sakura-Arashi
15 parts Complete Mature
50 Years after the great tenma war Rimuru is in his office doing paperwork Rimuru being the ruler of the monster nation he's forced to do paperworks bored out of his mind he consult ciel on what to do she then suggest to travel back in time to fix all his mistake and get rid of his regrets GUARANTEED (SHIZU X RIMURU) Possibly (RIMURU X CIEL) (RIMURU X THE DEMONESS TRIO) (RIMUR X VELZARD AND VELGRYND) (RIMURI X RUMINAS) (RIMURU X CHLOE AND HINATA) THIS IS MY 1ST STORY SO IM SORRY IF ITS NOT TO YOUR LIKING TELL ME MY MISTAKES IN THE COMMENTS THANKSSS ⚠️WARNING⚠️ I DONT OWN TENSEI SHITARA SLIME DATTA KEN(THAT TIME I GOT REINCARNATED AS A SLIME)
Back In Time, But As Velzard? (Discontinued) by diamondwolf146
20 parts Complete
This story begins at the end of the war in the ttigraas WN and when Rimuru gets sent to the end of space/time and when he awakes and goes in time it malfunctions and he's sent back as velzard 20.000 years before he was born these characters not belong to me and belongs to fuze-sensei Disclaimer: none of the art belongs to me, if you wish for it to be take down I will replace it #1 Back [27 Dec, 2022] #1 Veldora [19 Oct, 2022] #1 Velzard [1 Sep, 2022]
The Anomaly (Tensura X Date a Live) by Nocturne_1987
43 parts Ongoing
Due to boredom from work, Rimuru begged Ciel to go out to another world, but when he got to the world of Date a Live, he landed in a massive crater that could only be done by something monstrous, And then Rimuru encountered Mio Takamiya and was turned into a Spirit. But, actually, it was one of Ciel's plans to teach Rimuru a lesson. Even after knowing that he was tricked by Ciel, Rimuru still stays in this world to analyze the power of spirits. Note: It is highly recommended that you watch "Date a Live" and "That time I got reincarnated as a slime" to understand the plot. [Status]: continuing. [Posting time]: Random.
Whispers of Affection: The Milim and Rimuru Love Story (Rewriten ) by Friris
27 parts Ongoing Mature
Hello! This is the rewritten version of the story. In this updated version, there will be several changes, including adjustments to the relationship between Rimuru and Milim, and at some point, the story will diverge significantly from the original light novel. Please excuse any errors in my English, as it's not my first language. If you notice any inaccuracies, such as errors regarding the kingship of certain countries, please leave a comment, and I'll make sure to correct them. Thank you for your understanding and feedback! Additionally, I will be evolving Raphael into Ciel quite rapidly, but Rimuru will not be progressing from Demon Lord to True Dragon at the same pace.
You may also like
Slide 1 of 9
The Destined One cover
That Time I got Reincarnated As A True Dragon cover
Rimuru's restart new game plus omnibus cover
Perfected Tempest cover
Rimuru The Void God In The Future Past cover
Rimuru's boredom and his regrets(Time Travel) Tensei Shitara Slime Datten Ken cover
Back In Time, But As Velzard? (Discontinued) cover
The Anomaly (Tensura X Date a Live) cover
Whispers of Affection: The Milim and Rimuru Love Story (Rewriten ) cover

The Destined One

28 parts Ongoing

The final battle with Ivarage was, to put it briefly, catastrophic. The majority of the Cardinal World and Tempest were gone. Only people with True Dragon Level strength were alive...Diablo was the only one of his subordinates who was still alive. In desperation, everyone agreed to buy some time for Rimuru to jump into the past and alter the outcome of the battle. So Rimuru, who has forgotten everyone yet remembers everyone, has jumped into the past. But the price of jumping into the past without Ivarage following him was to heavy... all of his power has disappeared. Now, a slime with two unique skills and the memory of a novel called Tensura has begun a new journey in the distant past, when Veldora was just born.

More details