Found the premise interesting about him going into the body of a 4th century young prince of a germanic leader.
His naivety in all things regarding future tech and who and what to tell is very grating. He is going on and on about flying machines etc.
But what killed all my interest was the beginning of the roman arc. After getting nearly killed and taken hostage, he is just going on, as if nothing happened. it just replaced the germans with the romans and just does what he does. Completely killed my interest.
I read until chapter 7 in the roman arc, to see if it gets better, but nope.