Reincarnated Slimes and Spiders

Hirito Satō has had a horrible childhood, he lost his family when he was only a child, placed in an abusive orphanage, grew up on the streets. After getting a decent job, he and his friend Satoru Mikami (Rimuru Tempest) were killed one day by a thief and thought that was the end until they heard the voice of a woman and are reborn in another world. And now they found themselves as a pokemon and a slime. What kind of mysteries will these two face in this world?