I don't see why people are constantly comparing this to Negima, they both have different plots and different main characters! This manga is solid and engaging on its own-- I got into this without even realising it was a Negima 'sequel', and even then I don't know much about Negima.
It's exciting and fun, despite its shounen ideals. Admittedly the start was pretty rocky, but it got a lot better; the concept of immortal 'bodyguards' is pretty damnnnn interesting.
Likeable characters, clean well-done fights and great art. The pacing is refreshingly fast-- new scenes, new ideals and developments wham bam!
I also think its great that Touta has 'small' dreams. Nothing like 'I want to be the strongest' or 'I will be the best'. What 14 year old has a life goal anyways? I also find it great how 'ordinary' people are valued, you don't have to have crazy combat abilities to be amazing too.
I hope there aren't any long tedious training arcs or boring, drawn out fights.
So far (chapter 44) there have been no boring moments.
So yes, I've been surprised by the level of creativity of this manga. There are SO MANY POSSIBILITIES and things to be explored! This is the one to watch for. So much potential.