Returner

5 Years ago a high school student went missing without trace. In that period of 5 years earth started to change, living being especially humans started to evolve, they became stronger and able to do many things that was impossible 5 years ago. Other than living being evolving, 'dimension rift' started to appear and mysterious energy leaks to earth, most people call them magic. Some humans and other living organism is able to manipulate those energy evolving them further. Those rifts which are considered harmless leaks monster like in those fantasy books. Which cause earth to unite. Meanwhile that high school student return with knowledge and powers from another dimension. How will that high school student(Our main character) handle the situation on the new earth?