First, the characters are lovely and strange. They take the story to an offbeat level. No typical romantic comedy stuff, no exaggerated expressions, no normal talk at all. People like to call Hachiman and Yukino philosophers but I don't think that's right.
So basically, the anime is about how you deal with life. Loneliness, friends, society, and the "methods" of solving problems. You won't find anything interesting if you're not good with appreciating a philosophical approach to life.
But if you're like me and a bit different than the rest, THIS IS THE ANIME BITCHES. BETTER WATCH IT BEFORE YOU DIE AND THANK ME LATER. SERIOUSLY. I AM SO DAMN SERIOUS TRUST ME.
I cannot put my limited knowledge to any use here to tell you whether you will like it or not. You have try watching and either love it or drop it.
