The Slime Diaries Anime Season 1

The Slime Diaries: That Time I Got Reincarnated as a Slime (転スラ日記: 転生したらスライムだった件) is a spin-off anime series based on the manga of the same name. The anime is produced by 8-Bit. The series began airing in April 6, 2021. The anime was initially slated to premiere in January 2021 but was delayed due to COVID-19.

Synopsis
"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!