jack Smith's journey through the multiverse

Jack Smith was walking home from his usual routine and a crazed truck-kun suddenly decided to claim his life. Yadda yadda yadda god gives him 1 wish, but was interrupted by by author-kun and changed it to 10 because that would be unfair. He is also told that when he goes to other worlds he has to be reborn again in that world to be accepted by the world laws.