The author never skips a beat describing the great beauty of all the female characters. Even when it is not needed. For instance, at one point, one of them laughs alone in her room and he goes on to say how charming it is. This seems quite a bit excessive and gets annoying because we get it, she's pretty. You, narrator, don't need to keep reminding us. It gets annoying reading the same thing over and over,
Moving on to the story, it is about a ungodly knowledgeable hundreds of years old person sexually harassing his love interest, a preteen. Even though he was transported back to when he was a preteen, it still seems somewhat creepy. But that's not even the main problem with the story: the main problem is that all the bad guys are one dimensional caricatures and the female characters we basically only know what they are in relation to the MC because they are in love with him. We have the main love interest which we know wants to be a demon spiritualist and basically nothing else, we have a director of the alchemist association who's only job is apparently keeping the MC happy and following all his requests, we have another MC love interest who also wants to be strong and has some sort of disease, and we have an older student who's just pretty? Not only that, the author feels the need to always point out how they are all virgins because readers will obviously be disgusted if one of them wasn't "pure". You can sum up the author's view from this line in chapter 60: "Although she’s a woman, no one in the Heavenly Marks Family had the slightest contempt for her in their hearts. She is, after all, a powerful existence." Obviously, this means that otherwise, contempt for women is normal.
There are other story issues
. One of them is that the MC is a horrible person. In chapter 101, he encounters the soul of a legendary rank founder. The founder wanted MC as his disciple, but the MC just denigrates him for his attempt and continuously insults him in order to get him mad. This founder wasn't even an evil person or anything, just sort of prideful, but the MC is just an ass. And then he enslaves his soul, not exactly what I call a good person.
The MC is also too knowledgeable. He is the top scholar in alchemy, demon spiritualist, archery, history, everything! By the 70th chapter, he is a billionaire, has all the resources he needs, and legendary items. He also makes wild assumptions that don't really make sense with the information he has. At one point,
a person in his party that he hates became separated when he ran into the dark guild. Even though he was weak, he still returned home by himself. Somehow, this confirms in the MC's mind that this person's family is in league with the dark guild. Other possibilities I can think of: the person was lucky and didn't run into any monsters on the way back, the person's family found him and brought him back, he was kidnapped by the dark guild and the person's family paid their ransom and didn't publicize it because it would be embarrassing. But no, the author already knew they were in league and so the MC must also know.
Then we come to the writing. I don't know if this a cultural difference or the author is just a bad writer, but you will notice that the narrator describes a lot of things that it feels as if it was part of the story. For instance, the MC does something and the narrator says that it was "too outrageous". This is a somewhat awkward use of the word when usually it is used as a description of an action, not a person. Descriptions like this are usually used to describe reaction but when it is the author saying it, that mean he is reacting to it, not the characters in the story. Also, notice the awkward English from the sentence "She is, after all, a powerful existence." and think about the last time someone in America said someone was a "powerful existence". I would wager that no one has ever talked like that.
In summation, childish story with awkward (in English) writing combined with horrible subtext gives a below average work.
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