the letters i kept. - puffychu highschool au

niki and puffy were childhood friends, they met in a flower field when they were 7. they were inseparable, always at one another's house, sleeping in the same room, and sometimes even bathing together.
until, niki had to move.
the best friends were heartbroken, but niki still found a way to communicate with puffy. niki would write puffy letters every week. eventually, they stopped shipping to puffy's house. now they are in highschool.