The Slime Diaries TV anime is a related spin-off of the That Time I Got Reincarnated as a Slime TV anime series and will start on Japanese TV on April 6 at 11 PM.
Gather around humans, monsters, and everything in between, storytime with Rimuru is confirmed to start on April 6, 2021, when The Slime Diaries TV anime begins on Japanese TV.
Season 2 of That Time I Got Reincarnated as a Slime is currently streaming weekly.