Gin Elias, an ordinary highschool teacher died in a sudden death. Thinking that it was the end for him, he was spoken by a voice along with those who died in the same moment as him. It was then decided that they will be given a second chance to live in another world different to their own with the condition of making a change in that world, be it good or bad. Will Gin be able to survive and successfully change the world with him being an ordinary highschool teacher?