A fantastic read so far! I generally don't write in-depth reviews because:
1. I like to let people make up their own minds and reviews are often too biased to really allow people to do so without influencing them before they have a chance to read.
2. I'm generally pants at getting my point/feelings across.
But, for this Fan-fic, I feel the need to drop down my personal opinion so far (c40) of this story. I hope this encourages future readers to give this story a chance.
Writing Quality (4/5): Is actually pretty solid, a few minor mistake with sentence structure, spelling and grammar, but it's easy to ignore for the most part. But I do strongly suggest to the Author that you do spend a few moments every other chapter reading back on you older releases and correcting these errors as you find them. It not only makes your story more immersive for it's readers, but it will also help write you going into the future.
Stability of Updates (3/5): Well, I'm biased here. I doubt I will ever give a perfect 5/5 for any review I might give to anyone in the future, because releases are never fast enough for me. But so far, it's been alright! (WORK HARDER!) (╯°□°)╯︵ ┻━┻
Story Development (5/5): The plot is well written and thought out. It flows nicely and generally makes sense. Also look, for people who hate on the 'harem' genre, the romance in this story isn't a 'harem'. It is a polygynous relationship at best and kinky at worst. A 3 person relationship in such a setting doth not make a harem. I suggest if you're not convinced that you actually google search the meaning of 'harem' and have your mind blown.
Character Design (4/5): What can I say? So far your characters are well written and have quite some depth to them. If I had any real complaint about this topic, it's that your side characters don't really play any major role. I'd love to see more PoV's from the wives side, or even mini arc's where the wives play more of a role instead of the MC. But that's just me.
World Background (5/5): My rating might change going into the future of the series, but it's unlikely with how well the story has been written to date. But honestly, if you can't get a 5/5 while using both Marvel and Harry Potter universes then you're clearly doing something wrong.
Welp, I hope this helps anyone in the future.
@Author: Keep up the great work!