Currently there's up to 21 volumes of Tensura (short form of this series) light novel (in Japanese, of course). There's still expected to be at least one more volume left. At LEAST.
There's official translation LN that you can buy both physically and digitally. For physical version, you need to look it up yourself if it's available at your nearest Kinokuniya etc. For digital version, I found that there's up to 19 volumes available at Amazon.
As for fan translations, you can find them at:
https://tensurafan.home.blog/light-novel/
However they only have from volume 6-20. So not all volumes are available. You can either look for them at the all-novel-you-can-look-for site:
https://www.novelupdates.com/series/tensei-shitara-slime-datta-ken-ln/?pg=2#myTable
Or, look for them yourselves, like in reddit.
THANK YOOOUUUUUUUUUUUUU
Thank you for this! Can you also share what this latest chapter’s chapter in the novel! Pretty please!
If you're talking about the current chapter 121, the light novel would be at volume 10, chapter 3: the council. Just start from there and you're good to go.
OMG TYSM
Does anyone know where i can read the novel please?