The anime was initially slated to premiere in January 2021, but was delayed due to COVID-19.
“The slime life is fantastic! Slime Diaries, the hugely popular four-panel spin-off comic that has sold over 500,000 copies, is making its debut as the first That Time I Got Reincarnated as a Slime spin-off anime!
“I got hold of some valuable paper, so I’ve decided to write down the experiences I’ve had in diary format.
I’ll start it off with… hmm… ‘I got reincarnated as a slime.’ And that was when my adventure… when my… adventure…” Fun and humorous tales of the everyday lives of Rimuru and his friends in Tempest offer prime reincarnation entertainment, slime-style!
Taking a break from his time as a teacher, the powerful slime Rimuru Tempest returns to his kingdom, eponymously named Tempest, just in time to begin negotiations with a nearby nation—the Kingdom of Eurazania. While the negotiations are anything but peaceful, they do end successfully, allowing Rimuru to return and finish teaching. When trying to again return to Tempest, this time permanently, Rimuru is stopped by a mysterious figure who is somehow able to constrain the many magical abilities he has at his disposal.
In Tempest, the situation is even worse. A group of unknown humans has invaded the land and are assaulting its citizens, both influential and innocent. They are not just trying to bring harm either—they have the intent to kill. Can Rimuru overcome his powerful and dangerous foe and return to Tempest before it is too late?
[Written by MAL Rewrite]
The nation of Tempest is in a festive mood after successfully overcoming the surprise attack from the Blumund Army and the Western Holy Church. Beyond the festivities lies a meeting between Tempest and its allies to decide the future of the Nation of Monsters. The aftermath of the Blumund invasion, Milim Nava’s suspicious behavior, and the disappearance of Demon Lord Carrion—the problems seem to keep on piling up.
Rimuru Tempest, now awakened as a “True Demon Lord,” decides to go on the offensive against Clayman. With the fully revived “Storm Dragon” Veldora, “Ultimate Skill” Raphael, and other powerful comrades, the ruler of the Tempest is confident in taking down his enemies one by one until he can face the man pulling the strings.
The end of this dream took place outside during the day in my parents yard and I was outside with my mom by the swings, we were talking when maybe a black cat started walking on top of the swings near me, and I remember petting the cat.
I remember hearing some music that brought back a memory of me meeting this cat before, it almost brought me to tears oddly, and I remember maybe mentioning this memory to my mom and maybe the cat.
But that is all that I can remember of this dream.
Part of this dream involved me being in an underground building / sewer-like area, in this dream world there were sentient non-human animals of various species that existed that were probably based on real life non-human animals on Earth, and I saw a group of non-human animals from one species that I can not remember running for their lives being attacked by another non-human species that was stronger than them.
The non-human animals running for their lives possibly asked me for help, and so I helped them by maybe defeating whoever was after them.
In this dream world, getting help from a human and / or a more powerful person or species causes the one(s) getting help to be upgraded / to get a power-up / evolved, and their appearance changed to looking mostly human and they got stronger / more powerful.
I was thinking about this memory and wondering how they were doing now and I wanted to team up with them again to help them and / or I needed help, and so I was trying to figure out how to find and contact them.
Either they contacted me first or I contacted them, they were glad to hear from me and wanted to meet up et cetera, and so we started to set this up but that is all that I can remember of this dream.
This dream involved me being in a professional tennis tournament, there were a series of elimination tournaments et cetera to narrow down the finalist, and at the end they had the tennis players who were left gathered in the stands at an outdoor stadium.
They were looking at the results and records for players and even possibly letting people and the judges vote to decide who would get eliminated in this round, and this was being televised.
I remember calling my family by mobile phone as I drove to the event, they were watching on the television, and after the call I arrived at the outdoor stadium to wait with the other tennis players to see if I would be eliminated or not.
I probably said something to Mr. Nadal but I can not remember what was said, I just remember tennis players being focused on one-at-a-time and there were even announcers, and so the rest of us were waiting our turn.
But that is all that I can remember of this dream.
This dream involved someone getting chased by some people, I possibly somehow got involved and they started chasing me instead by mistake, but that is all that I can remember of this dream.
This dream took place during a gray day and I was riding in an automobile with some of my family like my mom, maybe my dad, and maybe one or more of my brothers.
My mom was driving, we were driving along a highway with forests on both sides of the road, and we were in a storm that got worse and worse.
There were other people driving in front and behind us, one automobile was driving way too closely behind us, and at some point their reckless driving and the wind of the storm caused an accident where the wind lifted our automobile in the air and it pushed the automobile in front of us off the road into the forest on the right side.
When we landed the reckless driver behind us possibly caused us to drive off the road into the forest on the right, and the wind blew us the rest of the way and we possibly had to jump out of the automobile.
Some automobiles possibly collided, maybe there was an explosion, but I can not remember.
Amazingly no one was hurt, not even the man in the automobile in front of us who had light-color skin, and we probably had a brief argument with the reckless driver who had been behind us who was a man with light-color skin who was somehow acting like this was our fault.
After checking on everyone and briefly talking we waited on emergency services to arrive, we waited in the forest, and we possibly heard police sirens but then things got quiet.
I felt that something was not right, I sensed that maybe the police and SWAT were about to raid the area falsely thinking that a terrorist attack had taken place or something, and so I went warn the others and I let them know to keep their hands up where the police can see them and follow their instructions if I was correct about this.
Suddenly at the opening of the forest I heard and saw something being dropped from above, I assumed that these were stun grenades, and so I yelled for everyone to look away and to not run and to keep their hands up because it was probably the police / SWAT.
I heard explosions behind me, I was the closest to the blast, and then I saw and heard SWAT roping down and yelling at us.
They were wearing camouflage military style uniforms and were fully armored (helmets, body armor, elbow pads, knee pads, and hard knuckle gloves) with everything having a matching military camouflage pattern (a MultiCam-like pattern) and they had black assault rifles (AR-15 style).
Thanks to my predictions and warning the others, no one was impacted by the stun grenades and everyone followed my recommendations so no one got shot, and I quickly let the police / SWAT know that this was simply an automobile accident / storm related accident so there were no threats here.
The police / SWAT calmed down after a quick search of the area and as I explained the situation to them, they called for assistance, and a somewhat tall female doctor / scientist with light-color skin with long maybe somewhat curly black hair wearing a white lab coat and maybe glasses arrived to check us for injuries as they waited for the fire department and a tow truck et cetera.
The female doctor / scientist was from the planet Salusa Secundus from the Dune franchise, she looked human but I wondered if she was human because I did not know that any humans were living on other planets especially not a planet like that which is that far away, and so I went to ask her about her planet and what other planets were inhabited and how many other sentient species had she met.
I can not remember her responses, I just remember my former uncle DE and maybe my male cousin ME showing up, and I remember briefly talking to them.
The next thing that I remember is possibly no longer being completely myself, I was possibly combined with the character Rimuru Tempest in human form from the anime television show That Time I Got Reincarnated As A Slime, and He / I went to a multi-story college / local government / multi-purpose-like building in a city.
He / I went up an alley to a side entrance on the right side of the building, some people happened to be going that way and let him / me in, and this was a special part of the building that only certain people were supposed to use.
The next thing that I remember is Rimuru / me returning to this same building and area, he / I was wearing maybe a white cap and gown (academic dress), and we entered an auditorium style classroom / political-looking room filled with other people wearing white cap and gowns and blue ones.
They were taking turns giving speeches in the center first floor area and having maybe political debates, Rimuru / I waited for our turn, but that is all that I can remember of this dream.
This dream was inspired by me watching part of episode 1 of the 2019 television show Flack before going to sleep.
Another part of the dream involved me thinking about trying some Dermasil lotion to see how good it is, but that is all that I can remember of this dream.
This dream once again possibly involved me being combined with the character Rimuru Tempest from That Time I Got Reincarnated As A Slime, and he / I were gathering together different sentient species to meet in a building in the wilderness near some corn / wheat fields or just fields of tall plants.
There was a small road that led to this building and dirt roads through the fields, and Rimuru / I seemed to be trying to get all the species to come together to form an alliance.
A group of small humanoids wearing white and black pinstripe suits approached the main road, they were led by a man / male whose appearance changed throughout the dream, with him having light-color skin at first and then medium-color skin and then dark-color skin and his height increased each time as well until he and the others were human-sized.
They seemed like a mafia or something, their leader acted like he wanted to kill Rimuru / me and take over the alliance and / or figure out another way to remove Rimuru / me from being the leader of the alliance, and so they seemed to be setting up their plans and secretly spreading their people around.
At some point the leader came to one of the meetings, he was taller now and had medium-color skin, and he was representing his people / species / mafia / whoever; but he just watched and listened and schemed quietly.
Later in the dream when the leader was maybe ready to try to overthrow Rimuru / me, he leader was taller and had dark-color skin with black hair, and he looked like the actor Mahershala Ali.
He was riding on the back of an old tan convertible four-door car, maybe a Lincoln or Oldsmobile, and he was riding confidently in a convoy of automobiles slowly sneaking up the road to the building to probably try to kill Rimuru / me when most people were gone.
Rimuru / I had saw them approaching, he / I did something but the dream jumped in time so that I did not know what he / I did, and as the convoy approached they noticed some bloody human-looking bones and then some larger non-human bones that eventually blocked them from reaching the building.
They sensed a possible trap but they turned through the dirt roads between the fields, they were on high alert, and Rimuru / I was sneaking around hiding and watching them to see if my plan to get them to leave would work or not.
They saw some people between the fields doing normal stuff, but they possibly heard a strange non-human animal sound in the fields (which was possibly something that Rimuru / I had set up) so they assumed that it was the sounds of whatever had left those bloody bones to they decided to leave and cancel their plans for today so Rimuru’s / my plan worked.
Something was going to have to be done about that mafia group though.
The next thing that I remember is being myself again and I was with my coworkers from The BP Library, and we went to the building that Rimuru used for the alliance meetings but all the other species were gone so it was just us.
We seemed to be on a work trip, we were in the main meeting room that had pews for seating and we were sitting down talking, and I remember one of my female coworkers mentioned a fictional male celebrity and then my supervisor Ms. JM responded: “That she hated that f####r!” and then everyone started laughing loudly in shock and then things got quiet as everyone wondered if our director Mrs. EC would say something and if Ms. JM would get in trouble for cursing like that.
Mrs. EC did not say anything and Ms. JM did not get in trouble, and so everyone continued talking and Ms. JM explained why she did not like that male celebrity.