Originally Posted by
shinta|hikari
If you have never been beaten your entire life, and is always the best at everything, it is only natural to assume that you will win right? That is what he did, and by the definition of arrogant I gave, he is not arrogant in that case. Its justified by all his previous experience and he merely stated fact. If he did get beaten by Hikari, its not an overestimation of himself, but rather an underestimation of Hikari's abilities, which is quite different (unless of course you want to clump them together again, which I don't really mind as long as you explain).
To put it simply, you are judging the situation as if its real. In reality, there is no such thing as a person who never loses or is the best at everything. But in Special A, he does exist, and that person is Kei. You can't really judge his actions with the usual standard, especially because he obviously thinks and acts much differently from "normal" people. Just because it seems arrogant to you doesn't mean he is arrogant on every standard (and this can be used in argument as long as the standard is clarified and explained, which I did).
I know there is a premium to humility, which indicates that one must not brag about one's abilities. But all we are discussing here is the meaning of the word "arrogant" itself (the issue about Kei depends entirely on this), and if you cannot even understand that, then I will simply end here.