I Want to Go Back to the Past

21 Years, from birth to now, I have spent 21 years. I vaguely remember that only junior high school was the happiest time for me, but there were also regrets at that time... You said it would be great if I could go back to the past, go back to the past to accompany those who should be accompanied, and protect my childhood, and the childhood of each of us... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.