Mahouka Koukou no Rettousei

I finished reading the enrollement arc manga yesterday and I'm considering starting to read the visual novel making it the first visual novel I'd ever read.

Do it, then you will understand.

 Spoiler

Tatsuya's "badass" persona is entirely made up in the viewer's own mind, he legitimately has no emotions, he's just a puppet whose only goals in life are to support his sister (who is from an important family, he's basically programmed to be her slave). You merely think he is cool when in reality he is nothing, he is not even capable of making decisions for himself, his only point of reference on whether or not he is doing something correctly is his sister's reaction.