I like that even if the "bad guys" can be a bit over-exaggerated at times, I can believe that they ended up that way and understand why. A lot of these revenge manga always have this comically evil 1D supervillain that is meant to just be pure evil, just so that you can't feel any remorse for them when they inevitably get killed or revenged or whatever. I don't really feel that from this one, like their actions are a product of their personalities and past.
I will say though that maybe there could be a little more time in developing side characters. Yae for example, I don't have a problem with. Yuu-chan? She appeared for a little bit but then we never really got to know anything about her afterwards (Intentional?). Maybe that will be fixed in later chapters.
I would say that the story is pretty good. There isn't really a problem with its pacing or premise. There's a good balance of the action happening and the improvement of the relationship between Yotsuha and Uichi.
I would say overall amazing and interesting read. I'd recommend it any day.