It's serviceable. Your chapter titles could use proper capitalization, it looks sloppy and is likely turning people off. Your synopsis is fine; though it lacks flair, it at least communicates the thrust of the novel well.
The opening situation hooks me. I got three chapters in before I started to slide off it. Why? Well, because the mentor character is cruel for apparently no reason but to stress out our protagonists, and because I'm not seeing any interesting character notes in either of our protagonists. They're motivated by vengeance, sure, but what was good about their parents that made them want to protect them, other than simple familial bonds? Particularly if their own families were scared of them? Why does their protector bother to save them and train them, if he's so powerful and cares so little about their survival through ths training? Your plotting and pacing is fine to good, but your characters are sketches and your training scenes feel bland and unoriginal as a result of your characters' personalities not shining through enough. They feel like archetypes, not people.
In summary, your work is interesting enough I want to like it, but falls short of hooking my interest longterm through a lack of significant character traits other than Punch Things Good and Want Vengeance. You need to illustrate your characters' motives more.
