it's about relationship of high school teacher & student and they meet again a few year later as adult

The movie is about "Father - Daughter" relationship. They are not blood related but similar with the love is like father-daughter

Might be because write by the same writer. The story line is almost the same, except this one about writer and chef

Adopted kid / grandkid and love unconditionally both kid & father / grandma. Both of them support to each other.