Go Back in Time Twelve Years

I forgot the angle at which the sun shone into the classroom on the first day of September, and the first name I carved on the tree. I forgot the way the white clouds were floating in the blue sky at that time, and the speed at which the leaves of the sycamore trees outside the window fell. I forgot the expression on his face when he lent me half an eraser, and the cry of my classmates when they said goodbye. I forgot the dream I had pursued without hesitation, and I also forgot the mood I felt when I received the certificate. I seem to have forgotten a lot of memories that should have been mine, and they are slowly drifting away from me under the erosion of time... Until one day, they came back to me again... Waking up one night, the past time reappears; we once so sincerely longed for it to be great if we could do it again. However, when everything reappears, how much will the result really change?