Mikami Satoru Had A Tragic Life. Being Brought Up In The Demonic Fourth Generation Of The White Room, He Met An Unfortunate Demise As The Wild Card Of The White Room. In His Last Thoughts, The Voice Of The World Makes Him Reincarnate As A Slime. However This Specific Slime Has What It Takes... To Survive In The Cardinal Realm. He Decides To Live Life As He Wills It. And Oh How Hard It Would Be. (Basically Childish And Young Rimuru.)