Reincarnation as Slime

Aito is an avenge person in society. His life is boring and he having a hard time at work because he was accused of stealing the money from his Boss. One day he had enough and decide to record the person who steals the boss's money and clear his name. He succeeded but that person came back to push him in front of the trail. He heard a robot voice saying, "Second life" then he fainted again. I don't own the thumbnail of the books. https://i.pinimg.com/originals/6b/53/bb/6b53bbb6a57fbd9fccc7bf4dcbc34d89.png