Ren's inner world of thoughts

ren is 28 years old .he works as a clerk in an exclusive hotel and he does not like his life and regrets the choices he made in the past.
for a long time, he thought and thinks to this day how good it would be if he could go back in time to his childhood, to the time when he was just finishing the 6th grade and going up to the 7th grade, in order to start all over again and make the right choices that he thought he should have made instead:
like to invest in studies, to be admitted to a professional university in Japan in order to fulfill his dream as a manga creator, he would have maintained a good relationship with his older sister, he would have become a successful man, he would have worked at a job he loved and he would have fulfilled himself as he always dreamed and wanted.

I never thought to myself that my heart's desire to return to my past would come true.