A message from your 20-year-old self to your loved one

STORY

My mother separated from my father before I could remember.
My older brother told me that he left home in the middle of the night, holding my younger brother's hand.
"Mom will be both a mother and a father."
He was always smiling and doing his best to raise me.
My mother always held my hand when we went out, when I was nervous about taking an entrance exam, when I was blushing in the winter.
There was a time when I was a student when I tried to shake off my mother's hand.
Now it's my turn to hold my mother's hand, which is gradually becoming wrinkled.