"Since you forgot about me,"
"Then don't ever remember me."
BE
#male protagonist criminal policeman, female protagonist college student#
*Note: The male protagonist used to love the female protagonist very much, but he forgot about it, so hard that he met someone else before getting married and having children. The heroine disappeared from this world at the end. It was disappearance, not death, but it was almost the same.
Purpose: Live hard