Eren arrives as a mysterious transfer student in the middle of the year at Trost High, and becomes an instant celebrity after beating the school's Mr.Popularity Reiner Braun in a fight. All is well, Eren seems like a genuinely nice, outgoing, down to Earth kind of guy that's reasonable. But his friends find something off about him. He disappears at random times, taking phone calls almost on the regular with his "dad", and he fights like a trained martial artist. There is something off about Eren that 16 year olds usually don't do, he has a very dark secret that very few people on Earth know about...