That Time I Got Reincarnated as a Slime (2018)

Mikami Satoru, a 37-year-old office worker, meets an untimely end at the hands of a stranger. Instead of fading away, he finds himself reincarnated as a slime in a fantastical realm. Adopting the name Rimuru Tempest, he sets out on an ambitious journey to foster harmony among diverse races. Embracing his extraordinary new identity, Rimuru explores his unique powers and embarks on an adventure that defies the mundane existence he once knew, aiming to reshape this world into a place of acceptance and unity.