written by KuroShiroNeko
To the MANY people who only watched 5 episodes of this anime then decided making a review. You're not really getting a good picture of the whole series before making these reviews so I'll address the "concerns" about this anime here.
1. Incest? There is NO incest whatsoever, the characters said so themselves that they only see each other as siblings and never think of one another as love interest. (Refer to episode 10 when Miyuki told this to her friends). Yes, they are indeed very close to one another. But if you watch the series, you would have known that Miyuki mentioned that she owned her life to Tatsuya. Also, Tatsuya only feeling left is for his little sister and was assigned to be her guardian.
2. The MC is OP. Yes, he is to an extent can be considered "OP". However, it was subtly revealed how he received these powers beforehand. But these powers came with a cost that he lost his ability to feel complex emotions. (This was briefly revealed during episode 9 when Tatsuya said that he has a heart that was unable to feel hatred. Also, this was never going to be fully revealed until Volume 8 of the Light Novel during the major flashback and the anime only covered up until Volume 7 and they skipped volume 5). Also, if you have watched episode 26, you will know that the major of Tatsuya's brain was occupied by Regrowth which made it difficult for him to yield other magics with ease. And even though Regrowth is an amazing ability, it came with a great cost. (Just watch it to know). EDIT: I'm sure if they went with a generic character who whines for being powerless (Haru from Accel World), many people will just still going to complain......
3. The Onii-sama situation, how do you want Miyuki to address her brother in a respectful way? Throughout the whole series, we were able to see that Miyuki is a respectful girl that address her elders in a respectful tone. You can see that she adds -sama to address all the people in her family. (Refer to episode 9 when she talks to her father and episode 26 when she was talking to her aunt.)
4. The "boring" explanations is long. Of course it will be long, how do you propose to explains something that the author came up with his imagination? He could have just said it's magic but no, he came up with a great system with all these complicated techniques that just blew your mind away whenever his explanations matched with the real life science theories! It's the selling point of this series as a whole so if you didn't like it, I don't blame you for not liking the show but just ignored the show then. But, just know that MANY explanations were taken out to fit these 3 arcs into a mere 26 episodes.
Sorry it has became my rant but it's just fun letting all these frustrations out when people keep talking shits about this anime when they barely watch past episode 12 and refused from the start to actually try to understand the concept of this series.
EDIT: Also, I would like to say that my point was that not watching the entire series and making a review is really not doing the series any justice. Just giving it your hates will just come across as: Hey, I didn't like it so you wouldn't like it so don't waste your time kinda thing.