That Time I Got Reincarnated as a Slime season 1 is available in: Japanese [Original] on Netflix Japan
"Rimuru Tempest" is the new name of a slime in a fantasy world taken by a former 37-year-old human Satou Mikami after he is killed by a passing robber. Broken free from ordinary, stale past life, his fresh adventure in a fantasy world as a slime monster with unique abilities begins.
Mikami's boring life ends abruptly when he's reincarnated in another world as a slime monster. He then forms a party of monsters, changing everything.