A man named Satoru Mikami is killed during a botched mugging and finds his soul reincarnated into the body of a Slime. But he finds himself not alone, as he comes across another being who claims to not remember who he was and they decided to help out each other out as they explore this world and see what it holds.
When a young gentleman by the name of Johnathan Richardson buys a telescope to see into the stars, just he always had since he was a boy, he notices something...odd. A new, reddish, celestial object has appeared in the sky. Jonathan decides to keep this to himself for the time being. Until he shows one of his colleagu...