Time Twister

A man living in the future classically isekai'd and was reincarnated in a fantasy world where modern science and magic co-exist, where the world is not limited within one planet. How will he survive armed with his powers and system gifted by a benevolent (?) God? Are there others like him? Can he go and visit his old world? What lies beyond the stars? Beyond...the universe? Note: The first 6 years will be fast. The story really begins once he reached 7 years old. The novel is written to explain his experiences, feelings, and thoughts, how through time, he starts to change his outlook and beliefs, influenced by the beings/people around him, and how they are also influenced by him, changing their fates.