Erwin Smith, a 40 years old man with blonde hair, blue eyes, high cheekbones and his height is about 6'2

He was now living In year 2023 in which surprised him as he remembered in his past life, he was the 13th commander of the Survey Corps but now he found himself as history professor in one of the prestigious school

He still have Hange as his friend who was a chemistry professor,Levi as a P.E. professor and so on

The only person that was missing in his past life right now was you