Tensura Nikki: Tensei shitara Slime Datta Ken

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Alternative Titles

Synonyms: The Slime Diaries: That Time I Got Reincarnated as a Slime
Japanese: 転スラ日記 転生したらスライムだった件


Type: TV
Episodes: 12
Status: Currently Airing
Aired: Apr 6, 2021 to ?
Premiered: Spring 2021
Broadcast: Tuesdays at 23:00 (JST)
Licensors: None found, add some
Studios: 8bit
Source: Manga
Genres: Slice of LifeSlice of Life, ComedyComedy, FantasyFantasy, ShounenShounen
Duration: 23 min. per ep.
Rating: PG-13 - Teens 13 or older


Score: 7.551 (scored by 2032520,325 users)
1 indicates a weighted score.
Ranked: #14372
2 based on the top anime page. Please note that 'Not yet aired' and 'R18+' titles are excluded.
Popularity: #1027
Members: 155,045
Favorites: 977
Ranked #1437Popularity #1027Members 155,045
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Episodes: /12
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"Dear diary... I got reincarnated as a slime."

Even in another world, lives aren't always on the line. There's plenty of work to be done, from feeding the community and forging the items the community needs; as well as plenty of play ...and hijinks throughout! Join Rimuru and friends as they kick back and enjoy their daily lives.

(Source: Kodansha Comics)


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Episode Videos

Manga Store

Related Anime

Characters & Voice Actors

Tempest, Rimuru

Okasaki, Miho


Senbongi, Sayaka


Ichimichi, Mao


Furukawa, Makoto


Kobayashi, Chikahiro


Eguchi, Takuya


Tomari, Asuna


Nomura, Kenji


Fukushima, Jun


Ootsuka, Houchuu


Haibara, Yuuji
Terashima, Takuma
Theme Song Lyrics
Kumada, Akane
Theme Song Performance
Original Creator


Opening Theme

"Brand new diary" by Akane Kumada

Ending Theme

#1: "Brand new diary" by Akane Kumada (ep 1)
#2: "Kamona Tempest! (カモナ・テンペスト!)" by Rimuru (Miho Okasaki), Great Sage (Megumi Toyoguchi), Veldora (Maeno Tomoaki), Shuna (Sayaka Senbongi), Shion (M.A.O), Ranga (Chikahiro Kobayashi), Gobuta (Asuna Tomari) (ep 2)
#3: "Oyasumi Orange (おやすみオレンジ)" by Rimuru (Miho Okasaki) (ep 3)

Apr 27, 2021
Memorak (All reviews)
Now this is a perfect addition to the 'That Time I Got Reincarnated as a Slime' franchise.

'Slime Diaries' takes place outside of the events shown in the original, and instead gives us a look at the day to day life of Rimuru and his companions. It has all the cuteness of the main series (plus a slightly cuter art style too), but without any of the issues. Is it plot heavy? Not at all. Is it fun to watch? Absolutely.

I would also like to call out that this spin-off FINALLY addresses one of my biggest gripes with the original - the shallow supporting cast. 'Slime read more
Apr 27, 2021
WorthOfPoint (All reviews)
Here we go again, Tensura, in my previous review on the second season of Tensura I think I was kinda mad because we got like no character development for the best characters, and the story was kinda slow and boring to watch...If you are more into the Tensura Franchise because of the action and the animation I think you should definitely avoid Tensura Nikki, but fortunately, that is not my case, I look for great animation and fine ass characters as well, that's not even close to a perfect score from me, but that's what we kinda got a simple story about how their daily read more
Apr 27, 2021
tensura1704 (All reviews)
This review is reposted (it's got deleted since I made a review before 3rd episode airing)

After the completion of Tensura S2 part 1 (Also known as That Time I Got Reincarnated as a Slime or Tensei shitara Slime Datta Ken) many of us thought that this spin off is the continuation of the story. But it's not!! This spin off is 100% different (Also not related to Main story).

We know that there aren't many SLICE OF LIFE isekais , or this might be a first one as far as I know since I'm just watching tensura. The elements which are needed in slice of life read more
Apr 27, 2021
fast2611 (All reviews)
I don't like writing early reviews.
But I think ill give it a pass due to the nature of this spin off, as it is a myriad of small stories giving Our secondary cast more everyday screen time and I wanna get people off the fence about it.
The artstyle is noticeably lower quality compared to the main series, but there's also excellent shots mixed in, for what I take it this is the studio using a less high stakes series for some improvement and experimentation, with quite impressive results.
As I kind of mentioned before this story gives us a glimpse in the daily life of the read more

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