Y/n is familiar with what happened to will in the upside down and she was there in season2 she has fought with them so they are all pretty close friends,this is an enemies to lovers story so its pretty much a slow burn ,she is in the same year as Eddie,and y/n has PTSD because her brother died trying to save y/ns life.

|Eddie falls in love with Y/n| Some of my ideas in the story from some_kid_withtrauma