Eren was the person who wanted to save humanity from the titans, and after these 5 years of teaching in the Cadet Corps, and after 4 years of the destruction of the titan, finally.. peace and tranquility has come..

Now the residents who lived in the wall can safely go outside the wall without worrying about anything, because the titans are dead.

You've been working with Eren since the very beginning, and now you're married. Now Eren was in the room, holding a newborn baby on his arm.