[Marcus H.]

It really bothers me when I read stuff like that, why does Tatsuya needs a weakness in combat ? Tatsuya is meant as a character who is basically perfect in anything he does except when it comes to being human, that is his flaw, some people keep arguing that it's just something the author came up with as an excuse and doesn't affect him negatively in any way, which is absolutely false. He is being forcibly bound to his sister thanks to the experiment done on him by his own mother and aunt(maybe he would still be living with his sister the way he is now, but no one can say that for certain because he is a slave to the result of that experiment and we will never know the truth unless he gets back his emotional freedom), ever since he was a child he had to struggle just to survive and the scars on his body are a testament to that, even with his current powers and knowledge he still doesn't see how impressive he is and looks down on his own accomplishments.

I hate people who are an unstoppable force.
I hate people who are an unstoppable force and yet continues to look down on himself even more.

Some readers only focus on how much of a badass he is and completely ignore the reality that he can never be truly happy, that his childhood was stolen from him and that he can never be a real human being.

That's bullshit. There are a lot of non-human characters who can live human lives, and he's even blessed with a constant companion like Miyuki.

Tatsuya's weakness is evident. Crual lack of versatility but he is specialisations are enough to rival the others. While Tatsuya will always fight with Decomposition, Regrowth, ES and Non systematic magic you have other OP mages like Miyuki. Not only that Miyuki has deadly spells but she has access to the numerous normal spells any normal magicians can use. Her Deceleration Zone is so ridiculously strong and that's just a common aoe spell, how many magics of this genre exist? Plenty. Tatsuya can't even use the spells he discover. I am not even sure Tatsuya can beat her 10 times out of 10. Normal magicians potential is too high especially 10MC magicians. I am sure Tatsuya would have been stronger if he was born with only one of his innate magics.

The problem is that his supposed losses are against hard counters. It would be much better if battles allow for equal chances of winning between Tatsuya and the enemy. That or Tatsuya wins against an enemy through sheer tactical superiority (no, his constant reliance to the information dimension doesn't count).