Magic Rune Academy

A person from contemporary Earth finds out he possesses magic and is immediately introduced to a whole world of magic, myth, and bestiary, where magic essentially replaces science.

From that point, the MC becomes the best at everything he tries his hand at; in fact, he is the highest level of magic user imaginable and even the head of the school gushes about how wonderful and special he is (because of course that'll what she'll do). All the women attracted to him, the men, the few that have any presence either adore him or, in a couple of instances, hate him. In one of those instances, the hatred is used for purely plot reasons.

In literary terms, we call such a character in such a story a Mary Sue (or Gary Stu). A little Mary Sue-ness might be fun to read, and the harem aspects of the story do suggest that there will be some level of the story bending itself in the MC's favor. The problem is that there is little for the character outside of being that archetype.

Every challenge is manufactured, and most of the time the MC is given things for reasons that are never expanded upon; the magic university that he is now enrolled in, decides to also fund his various expenses. The author never bothers with any form of reasoning. He needs it and therefore he gets it.

Like most Harem stories, all the female participants accept that he needs a harem (because he's too awesome not to have a harem) and are excited about expanding that harem.

The story follows the usual Isekai trope. Man transferred to a new world. He just wakes up there; he never questions, he's excited to be there, and nothing in his life up until that point matters at all to him; not family, not friends, not any achievement in his life. All is forgotten. No matter if that's the harem aspect or the new world aspect, the MC never pause to consider abandoning his old life, and, similarly, the women never question the harem, never feel jealous about their significant other building a harem, don't care about their life before the story and their entire existence now revolves around the MC who is as interesting as a wet paper towel.

----

This book falls into the Slice of Life sub-genre, which could have been interesting if there was any character progression or if we learned something about them that changed anything in the dynamic. Apart from filling it will blushing women, random events that suggest sexuality, or those leading to sex scenes there is little substance. Not that there aren't any significant events and story points worth that label that expose who those characters are, but they are so remote and glazed over that I'm not sure if their inclusion is nothing more than padding.

The book ends with an end-of-the-year test where the MC and his little group need to win a battle against their teachers, which, in context, is like a first-year basketball major required to win a game against LeBron James and company. Something so ridiculous, that it falls into "unbelievable worlds" territory.

There are some good bits here and there, and some surprising development and emotional weight, but, as mentioned earlier, they are so few and remote that the benefits never materialize (and they are dropped shortly after appearing).