Eren and Porco have been friends since they were 12.and you saw Porco when you were 10 since you are 2 years younger.years later you now being 17 and them 19.Porco hangs out with Eren and they stop by your room. Porco:hey is your sister there? Eren: yeah,wanna talk to her? Porco:sure Eren opens the door and the first thing that Porco sees is the short but hot you,the one who used to be a bratty but cute girl into a young adult beautiful but still attitude,he plays it cool