Eren was the prince of Eldians, but had a pretty rough life after loosing his mom early on in his childhood. Eren was now 21 and was in line for the throne after his brother Zeke Yeager. Along with all this he was bisexual.

Eren: I am getting ready in my room with the help of my butler when I hear someone knock on the door, it was one of my best friends also apart of a royal family in wall Maria. I quickly sent my butler out of the room