One of the best harem stories I have seen. The concept is just within the limits of what we can suspend for disbelief, it allows the storyline to really take hold and allow the reader to get immersed. The storyline itself is engaging, and I am looking forward to what shapes up next. The only danger I could foresee on the horizon is possible side character bloat, but the author themselves would be the best judge on how many characters you can juggle along with the story, so I will defer to them.