Review Detail of ADDB in My Vampire System

I really don't understand the Novel's 1st place. The novel isn't bad as is, there is a lot of potential in the world building. The characters, while not quite there yet, aren't really bad. The main characters that is. Most side characters pretty much don't have any depth at all. I don't particularly like the way the school life is described. It's a military school. Even if they want students to experience a rough life, students "disappearing" each year? Yeah, who would care about that... There's also other things I consider plotholes that annoy the heck out of me. First describing portals as a precious technology that is only in the hands of three kinds of people, but nevermind the fact that the "dangerous" red portal is accessible at a school, how come there are no guards/you can simply enter? All in all, a good approach but the plot really seems too unlogical to me at times.