I like the story a lot but I would have preferred a "older brother-younger brother" kind of relationship, considering their age and their age gap (they are more than 10 years apart and he is a child).
Also, what the *** did Levi do to that noble and his servants? 3 died instantly and one was on the verge of death in the span of a second, despite Levi wearing a collar that supposedly suppresses magic.
